Xorg Xserver always freezes at random times in any DE (Xfce, dwm, gnome)

This is the first report that i had sent to the linux mint team, but i'm thinking this is a Xorg related bug:

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Version: Linux Mint 15 "olivia" XFCE/64bits

Hi! sorry for my english, because that's not my native language!

That problem always happen but at a random time. First, when i'm working, the mouse suddenly freezes, but keyboard and any other devices keeps working until i try to open a ttyX (Ctrl+Alt+FX) or try to restart the xserver (Ctrl+Alt+Backspace). If i try that, the xserver totally freezes and SysReq keys doesn't work, but SSH login from another computer works.

I set heavy debug level (8) and i had rescued this dmesg out: (i'm going to attach the full output, but i guess that this is the most important part)

[ 9819.504850] xfsettingsd[2280]: segfault at 4 ip 00007f4ad6b5e588 sp 00007fff3a4464f0 error 6 in libSM.so.6.0.1[7f4ad6b5c000+7000]
[ 9819.504943] xfsettingsd/2280: potentially unexpected fatal signal 11.
[ 9819.504948]
[ 9819.504952] CPU 2
[ 9819.504962] Pid: 2280, comm: xfsettingsd Tainted: PF C O 3.8.0-35-generic #50-Ubuntu Hewlett-Packard CQ5513LA/2A99
[ 9819.504968] RIP: 0033:[<00007f4ad6b5e588>] [<00007f4ad6b5e588>] 0x7f4ad6b5e587
[ 9819.504995] RSP: 002b:00007fff3a4464f0 EFLAGS: 00010216
[ 9819.505000] RAX: 0000000000000001 RBX: 00007f4adb8c80c0 RCX: 0000000000000000
[ 9819.505004] RDX: 00007fff3a446570 RSI: 0000000000000001 RDI: 00007f4adb8b2c10
[ 9819.505008] RBP: 0000000000000000 R08: 0000000000000001 R09: 00007f4adb8d7d90
[ 9819.505013] R10: 0000000000000000 R11: 000000000000001a R12: 00007f4adb8c80d0
[ 9819.505017] R13: 00007f4adb8e0980 R14: 00007f4adb8e0460 R15: 0000000000000000
[ 9819.505023] FS: 00007f4ada4209c0(0000) GS:ffff88006ed00000(0000) knlGS:00000000f75036c0
[ 9819.505028] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 9819.505032] CR2: 0000000000000004 CR3: 00000000663cc000 CR4: 00000000000007e0
[ 9819.505037] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 9819.505042] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 9819.505047] Process xfsettingsd (pid: 2280, threadinfo ffff8800660e0000, task ffff880035d6dd00)

dario@dario-CQ5513LA ~ $ inxi -Fx
System: Host: dario-CQ5513LA Kernel: 3.8.0-35-generic x86_64 (64 bit, gcc: 4.7.3)
           Desktop: Xfce 4.10.2 (Gtk 2.24.16) Distro: Linux Mint 15 Olivia
Machine: System: Hewlett-Packard product: CQ5513LA
           Mobo: PEGATRON model: 2A99 version: 6.01 Bios: American Megatrends version: 6.08 date: 04/28/2010
CPU: Triple core AMD Athlon II X3 435 (-MCP-) cache: 1536 KB flags: (lm nx sse sse2 sse3 sse4a svm) bmips: 17478.4
           Clock Speeds: 1: 800.00 MHz 2: 800.00 MHz 3: 800.00 MHz
Graphics: Card: NVIDIA C61 [GeForce 6150SE nForce 430] bus-ID: 00:0d.0
           X.Org: 1.13.3 driver: nvidia Resolution: 1368x768@60.0hz
           GLX Renderer: GeForce 6150SE nForce 430/integrated/SSE2 GLX Version: 2.1.2 NVIDIA 304.88 Direct Rendering: Yes
Audio: Card-1: NVIDIA MCP61 High Definition Audio driver: snd_hda_intel bus-ID: 00:05.0
           Card-2: Logitech QuickCam E2500 series driver: USB Audio usb-ID: 046d:089d
           Sound: Advanced Linux Sound Architecture ver: k3.8.0-35-generic
Network: Card: NVIDIA MCP61 Ethernet driver: forcedeth port: e480 bus-ID: 00:07.0
           IF: eth0 state: up speed: 100 Mbps duplex: full mac: 70:71:bc:3a:a1:12
Drives: HDD Total Size: 640.1GB (19.2% used) 1: id: /dev/sda model: WDC_WD6400AAKS size: 640.1GB
Partition: ID: / size: 77G used: 61G (83%) fs: ext4 ID: swap-1 size: 11.61GB used: 0.00GB (0%) fs: swap
RAID: No RAID devices detected - /proc/mdstat and md_mod kernel raid module present
Sensors: System Temperatures: cpu: 26.9C mobo: N/A gpu: 0.0:
           Fan Speeds (in rpm): cpu: N/A
Info: Processes: 177 Uptime: 1:16 Memory: 675.8/1734.5MB Runlevel: 2 Gcc sys: 4.7.3 Client: Shell inxi: 1.8.4

dario@dario-CQ5513LA ~ $ lsmod
Module Size Used by
pci_stub 12622 1
vboxpci 23194 0
vboxnetadp 25670 0
vboxnetflt 27613 0
vboxdrv 339508 3 vboxnetadp,vboxnetflt,vboxpci
vmnet 55800 13
vsock 52915 0
vmci 87402 1 vsock
vmmon 80278 0
parport_pc 28152 0
ppdev 17073 0
bnep 18177 2
rfcomm 42699 4
bluetooth 228967 10 bnep,rfcomm
binfmt_misc 17500 1
nls_iso8859_1 12713 1
snd_hda_codec_realtek 78445 1
snd_usb_audio 140732 1
snd_usbmidi_lib 24938 1 snd_usb_audio
gspca_zc3xx 52496 0
gspca_main 28365 1 gspca_zc3xx
videodev 129379 2 gspca_main,gspca_zc3xx
joydev 17377 0
kvm 443533 0
snd_hda_intel 39619 3
snd_hda_codec 136498 2 snd_hda_codec_realtek,snd_hda_intel
snd_hwdep 13602 2 snd_usb_audio,snd_hda_codec
snd_pcm 97451 3 snd_usb_audio,snd_hda_codec,snd_hda_intel
snd_page_alloc 18710 2 snd_pcm,snd_hda_intel
snd_seq_midi 13324 0
snd_seq_midi_event 14899 1 snd_seq_midi
snd_rawmidi 30180 2 snd_usbmidi_lib,snd_seq_midi
snd_seq 61554 2 snd_seq_midi_event,snd_seq_midi
nvidia 11309139 30
snd_seq_device 14497 3 snd_seq,snd_rawmidi,snd_seq_midi
snd_timer 29425 2 snd_pcm,snd_seq
snd 68876 19 snd_hda_codec_realtek,snd_usb_audio,snd_hwdep,snd_timer,snd_pcm,snd_seq,snd_rawmidi,snd_usbmidi_lib,snd_hda_codec,snd_hda_intel,snd_seq_device
wmi 19070 0
mac_hid 13205 0
edac_core 62033 0
k10temp 13126 0
psmouse 95934 0
i2c_nforce2 13020 0
edac_mce_amd 23114 0
soundcore 12680 1 snd
serio_raw 13215 0
microcode 22939 0
lp 17759 0
parport 46345 3 lp,ppdev,parport_pc
dm_multipath 22873 0
scsi_dh 14843 1 dm_multipath
btrfs 800271 0
zlib_deflate 26914 1 btrfs
libcrc32c 12644 1 btrfs
hid_generic 12540 0
usbhid 47074 0
hid 101289 2 hid_generic,usbhid
dm_raid45 76812 0
usb_storage 61300 0
xor 17116 1 dm_raid45
dm_mirror 21976 0
dm_region_hash 20849 1 dm_mirror
dm_log 18529 3 dm_region_hash,dm_mirror,dm_raid45
vesafb 13828 1
pata_acpi 13038 0
sata_nv 31841 3
forcedeth 67065 0

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Freeze happens in all desktop environments that i have tested, XFCE, GNOME, DWM, i have tried different combinations with login managers like MDM, XDM, SLim but freeze always happens

I have used different video drivers: NVIDIA propietary drivers, NOUVEAU etc, and freeze still happens!

Dmesg shows the same info after freeze:

[10186.394614] INFO: task Xorg:1625 blocked for more than 120 seconds.
[10186.394624] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[10186.394629] Xorg D ffff88006ec13ec0 0 1625 1561 0x00400004
[10186.394640] ffff880035925dc0 0000000000000082 ffff880044230000 ffff880035925fd8
[10186.394650] ffff880035925fd8 ffff880035925fd8 ffffffff81c15440 ffff880044230000
[10186.394659] ffff88006944d3c0 ffff88002cf82000 ffff88003553c000 ffff88003a804058
[10186.394667] Call Trace:
[10186.394684] [<ffffffff816ccf39>] schedule+0x29/0x70
[10186.394696] [<ffffffff814fd905>] usb_kill_urb+0x85/0xc0
[10186.394705] [<ffffffff8107def0>] ? finish_wait+0x80/0x80
[10186.394735] [<ffffffffa00998bf>] usbhid_close+0x9f/0xb0 [usbhid]
[10186.394754] [<ffffffffa0082072>] hidinput_close+0x22/0x30 [hid]
[10186.394764] [<ffffffff815345f5>] input_close_device+0x55/0x80
[10186.394773] [<ffffffff8153a769>] evdev_release+0xa9/0xb0
[10186.394781] [<ffffffff811961bc>] __fput+0xec/0x240
[10186.394788] [<ffffffff8119631e>] ____fput+0xe/0x10
[10186.394797] [<ffffffff8107a357>] task_work_run+0xa7/0xe0
[10186.394806] [<ffffffff81014d51>] do_notify_resume+0x71/0xb0
[10186.394815] [<ffffffff816d69da>] int_signal+0x12/0x17

And here's the Xorg backtrace:

warning: no loadable sections found in added symbol-file system-supplied DSO at 0x7fffd47fe000
0x00007f46f9211e03 in __select_nocancel () at ../sysdeps/unix/syscall-template.S:81
81 ../sysdeps/unix/syscall-template.S: No such file or directory.
(gdb) bt
#0 0x00007f46f9211e03 in __select_nocancel () at ../sysdeps/unix/syscall-template.S:81
#1 0x00007f46fb5b38d0 in WaitForSomething (pClientsReady=pClientsReady@entry=0x7f46fc601f20) at ../../os/WaitFor.c:221
#2 0x00007f46fb45e811 in Dispatch () at ../../dix/dispatch.c:357
#3 0x00007f46fb44d57a in main (argc=5, argv=0x7fffd47765c8, envp=<optimized out>) at ../../dix/main.c:298