Keyboard input problems in various applications

I am having trouble with i bus, x, or unity (gnome 3.12).

Fresh install ubuntu 14.10, 64 bit, nvidia. Having same problems at another pc too.

Problem could be language based (turkish keyboard input).

Symptoms:
Mostly Java based applications freezes while typing, sometimes they crash, sometimes they become responsive again. Not always java based applications. I am having this issue with: chromium, filezilla, gedit, poedit etc.

Also unable to type turkish characters at poedit (ö,ğ,ü,ç,ş,ı). But gedit, netbeans or other apps are fine. (Most important part, i need poedit for translating php projects.)

I was using gnome ubuntu 14.10 and gnome 3.10 perfectly before fresh install.
Now i got ubuntu 14.10 and gnome 3.12.

Tried to upgrade to gnome 3.14, those problems are all solved, but gnome 3.14 is not ready for ubuntu. So nautilus and some other apps become unusable. So i had to downgrade.

My problem is close to this one except i am having trouble with turkish characters too:
https://bugs.launchpad.net/ubuntu/+source/ibus/+bug/481656

Thank you all already.

ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: ibus 1.5.8-2ubuntu2
ProcVersionSignature: Ubuntu 3.16.0-29.39-generic 3.16.7-ckt2
Uname: Linux 3.16.0-29-generic x86_64
ApportVersion: 2.14.7-0ubuntu8.1
Architecture: amd64
CurrentDesktop: Unity
Date: Thu Jan 29 00:30:36 2015
InstallationDate: Installed on 2015-01-23 (5 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
SourcePackage: ibus
UpgradeStatus: No upgrade log present (probably fresh install)