Sometimes when i'm using amarok and i push to next track maybe too times, amarok become crazy and the the songs start one after another until the playlist is finished. Then i see that links in iceweasel don't work(but in konqueror work), and all keyboard association button don't work (like to change desktop).I must login again.Then all work perfectly..
I don't know why.

PS: because of this bug of amarok, xorg use 80-90% of cpu, i can't use the shell because the shell type an infinite numbers of letter b, the k-menu appears with some imperfections(like refreshing of a screen).Some things don't wrong, and i must relogin.