[Bug 907288] [NEW] Keyboard layout switching became abnormal after 20.12.2012 KUbuntu update

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Ubuntu release: KUbuntu 11.10 (KDE 4.7.3)
Yesterday a huge bulk of package updates (mainly KDE ones) became available in the ubuntu repositories. I installed them as I usually do. After that, KDE keyboard layout switcher stopped working normally. I have only two layouts: US English and Russian. When I start from Russian layout, I can only once switch to English. After that trying to return to Russian only causes the layout indicator to blink to Russian flag and then immediatly back to US flag. The keyboard is kept with English layout. When I right-click to the layout indicator I see rather strange menu:

[us flag]  us - English (USA)
                 --  -
----[solid separating line]---
[ru flag]  ru - Russian
----[solid separating line]---

Obviously there is some fake empty keyboard layout named "--" that breaks the switcher and that should not be there.
To get Russian layout I should call this menu (right-click to the indicator) and then to click to the Russian layout item. This is extremely inconvenient and annoying.
I must note that I set the switching key combination to Ctrl+Shift+Backspace (via "Alternative combination" option in the "Keyboard settings"), which I am using for many years, and don't like anything else. If I choose something among standard X combinations, like Ctrl+Shift or some other (they are in the advanced settings tab of the keyboard setrtings module), I can again switch there and back smoothly, but pressing any alternative combination that I try to set breaks this again.
Also, I can set some combinations to get to a specific layout (directly to Russian and directly to English) and they both seem to work, but this is not convenient for me too and I consider it only as a temporary solution.

This problem definitely was not present before yesterday (20.12.2012)
update. Possibly, it appeared due to some of the KDE packages that were
updated (there are a lot of them, so I am not sure which one is
responsible).

** Affects: kde-workspace (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: bot-comment
-- 
Keyboard layout switching became abnormal after 20.12.2012 KUbuntu update
https://bugs.launchpad.net/bugs/907288
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