for some really strange reason, I cant Shift+Click and Cmd+Click select files anymore in my OSX installation. I also cant copy Layers with Alt+Click inside photoshop anymore. In fact, it doesnt work anywhere, Finder, Photoshop (which is the biggest Problem for me), etc. ...
It started two days ago but I dont know why and how?! Does somebody know why this happenend and how I can get it back - without using the time machine recovery function?
Update: - I already switched keyboards (three times) but it still doesnt work. - Super clean desk, no spills or anything else
AND the problem seems to be something else / bigger. the keyboard works again but now some other weird phenomen occured yesterday... Some fonts inside thunderbird + safari + firefox where "messed up" .... today, everything is fine again. Something is wrong with this damn thing... and I dont know what?
Its a Mac Pro with OSX 10.8.5