lvm - freeze any lvm command after lvremove

1. Ubuntu - 12.10 quantal
2. lvm2 - 2.02.95-4ubuntu1
While deleting multiple snupshots, LVM get error. Any lvm command after the results freez.

Reproduse:
cat /dev/zero | dd of=./my_test_pv.bin bs=1M count=1024
losetup /dev/loop0 ./my_test_pv.bin
pvcreate /dev/loop0
vgcreate my_test_vg /dev/loop0

lvcreate my_test_vg --name test_lv_01 --size 100M
lvcreate my_test_vg --name test_lv_02 --size 100M
lvcreate my_test_vg --name test_lv_03 --size 100M
lvcreate my_test_vg --name test_lv_04 --size 100M

for i in 01 02 03 04; do lvcreate -s /dev/my_test_vg/test_lv_$i --name SS-$i --size 64M; done
  Logical volume "SS-01" created
  Logical volume "SS-02" created
  Logical volume "SS-03" created
  Logical volume "SS-04" created

lvs
  LV VG Attr LSize Pool Origin Data% Move Log Copy% Convert
  SS-01 my_test_vg swi-a-s- 64,00m test_lv_01 0,00
  SS-02 my_test_vg swi-a-s- 64,00m test_lv_02 0,00
  SS-03 my_test_vg swi-a-s- 64,00m test_lv_03 0,00
  SS-04 my_test_vg swi-a-s- 64,00m test_lv_04 0,00
  test_lv_01 my_test_vg owi-a-s- 100,00m
  test_lv_02 my_test_vg owi-a-s- 100,00m
  test_lv_03 my_test_vg owi-a-s- 100,00m
  test_lv_04 my_test_vg owi-a-s- 100,00m

lvremove /dev/my_test_vg/SS-0* --force
  Unable to deactivate open my_test_vg-SS--01-cow (252:6)
  Failed to resume SS-01.
  Internal error: Writing metadata in critical section.
  Internal error: Performing unsafe table load while 1 device(s) are known to be suspended: (252:1)
  Internal error: Performing unsafe table load while 1 device(s) are known to be suspended: (252:7)
  Internal error: Writing metadata in critical section.
  Logical volume "SS-02" successfully removed
  Internal error: Writing metadata in critical section.
  Internal error: Performing unsafe table load while 1 device(s) are known to be suspended: (252:2)
  Internal error: Performing unsafe table load while 1 device(s) are known to be suspended: (252:10)
  Internal error: Writing metadata in critical section.
  Logical volume "SS-03" successfully removed
  Internal error: Writing metadata in critical section.
  Internal error: Performing unsafe table load while 1 device(s) are known to be suspended: (252:3)
  Internal error: Performing unsafe table load while 1 device(s) are known to be suspended: (252:13)
  Internal error: Writing metadata in critical section.
  Logical volume "SS-04" successfully removed
  libdevmapper exiting with 1 device(s) still suspended.

lvs <- at this moment console freez... ctrl+c does not help
--------------------
in second console:

dmsetup info /dev/mapper/my_test_vg-test_lv_0?
Name: my_test_vg-test_lv_01
State: SUSPENDED
Read Ahead: 256
Tables present: LIVE & INACTIVE
Open count: 2
Event number: 0
Major, minor: 252, 0
Number of targets: 1
UUID: LVM-e84Pj8WjgMKXulfJ1FDlXYxrNnnzRZWjUDyoMDJEXfF1cfV8vwmPPWl6uuzFcBRI

Name: my_test_vg-test_lv_02
State: ACTIVE
Read Ahead: 256
Tables present: LIVE
Open count: 0
Event number: 0
Major, minor: 252, 1
Number of targets: 1
UUID: LVM-e84Pj8WjgMKXulfJ1FDlXYxrNnnzRZWjazRu4GvINTLKl6Dz2dmmIqOZPCa7SL7W

Name: my_test_vg-test_lv_03
State: ACTIVE
Read Ahead: 256
Tables present: LIVE
Open count: 0
Event number: 0
Major, minor: 252, 2
Number of targets: 1
UUID: LVM-e84Pj8WjgMKXulfJ1FDlXYxrNnnzRZWj9HKgQcqI9w74Ks9zxkbdjiKEqxjN3UnB

Name: my_test_vg-test_lv_04
State: ACTIVE
Read Ahead: 256
Tables present: LIVE
Open count: 0
Event number: 0
Major, minor: 252, 3
Number of targets: 1
UUID: LVM-e84Pj8WjgMKXulfJ1FDlXYxrNnnzRZWjbAH0DdMfVoCrqRaggSjw0FXxrcGHswm6

my_test_vg-test_lv_01 - are suspended

dmsetup resume /dev/mapper/my_test_vg-test_lv_01

at this momen lvs comman in first console unfreez
-----------------------------------------
console 1
  LV VG Attr LSize Pool Origin Data% Move Log Copy% Convert
  SS-01 my_test_vg -wi-a--- 64,00m
  test_lv_01 my_test_vg -wi-a--- 100,00m
  test_lv_02 my_test_vg -wi-a--- 100,00m
  test_lv_03 my_test_vg -wi-a--- 100,00m
  test_lv_04 my_test_vg -wi-a--- 100,00m

repeat lvremove
lvremove /dev/my_test_vg/SS-01
  Logical volume "SS-01" successfully removed

I repeated the process with lvremove -vvvvv
output attached