Version: 2.9.4 (using Devel) Compiler: gcc (GCC) 4.3.2 OS: Linux Installed from: Compiled sources Also, choice was not available, but I am using KDE 4.1.3 using KDEmod on Arch Linux. I changed my global shortcut to "ctrl+space" to detract/retract Yakuake. Now when I use Yakuake and move the mouse wheel to scroll a page in the Opera Web Browser, the page will zoom instead (ctrl+wheel zooms the page in Opera). When I changed the global shortcut back to F12 and restarted Yakuake, the bug disappeared (moving the mouse wheel caused the page to scroll, not zoom). This bug happens whether Yakuake was retracted or not (while Yakuake is open, I can move the mouse cursor over the Opera window and when I move the mouse wheel, the page will zoom). Also, the bug didn't seem to effect anything else. I tried pressing "t" (as ctrl+t opens a new tab) and there was no effect.
Sorry, but I cannot think of any technical reason why this bug - which I can't reproduce - would be Yakuake-specific. I'm thinking it's more likely to be a general problem with KDE global shortcuts, if it is a KDE problem at all (might be an X setup issue in some way, or simply a bug in Opera with regard to handling Ctrl). I'm reassigning this to kdelibs for now, in the hopes that someone there will have more of a clue.
This report is quite old and I can't reproduce the reported problem using KDE SC 4.8 beta1. Mouse wheel still scrolls web page in opera after changing that global shortcut. Feel free to reopen if this still happens to the reporter in recent version of KDE SC.