usb mouse and keyboard stopped working

Hello,
i installed 11.1 32bit and it worked fine. The last thing i did, was installing Kde 4.2. After rebooting my mouse and keyboard stopped working. I can’t type aynthing in runlevel 3 and neither can i move the mosue or type in runlevel 5. The System seems to find the devices during startup (compare the pasted boot.msg at #412654 - Pastie](http://pastie.org/412654)). I also verified that the lines install uhci-hcd /sbin/modprobe ehci-hcd; /sbin/modprobe --ignore-install uhci-hcd
install ohci-hcd
/sbin/modprobe ehci-hcd; /sbin/modprobe --ignore-install ohci-hcd are in modprobe.conf.

Anybody a clue whats wrong here?

thanks, Johannes