Wrong key input after boot, although right language set

Ever since the 13.10 Ubuntu upgrade I have this problem when I boot to my computer: although Slovenian input is set on login screen the keyboard is actually US. If I go to the keyboard settings I only see that the right (Slovenian) language is set.

I can get back to my keyboard if I click 'lock/switch' account, and then click the 'Switch user' button to login to my account again. After that Slovenian keyboard is back.

This problem doesn't appear on every (re)boot, but mostly (some 80%).

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: ibus 1.5.3-6ubuntu2.1
ProcVersionSignature: Ubuntu 3.11.0-15.23-generic 3.11.10
Uname: Linux 3.11.0-15-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.12.5-0ubuntu2.2
Architecture: amd64
Date: Tue Jan 7 09:00:27 2014
EcryptfsInUse: Yes
InstallationDate: Installed on 2013-04-05 (276 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Alpha amd64 (20130402)
MarkForUpload: True
SourcePackage: ibus
UpgradeStatus: Upgraded to saucy on 2013-09-28 (100 days ago)