Problems with keyboard

I have had my g15 keyboard for few weeks and i has been great.
However this week my guild wars stopped to respond to any keys It happens only when I switch to any other program, and to get it working i have to restart guild wars.
Guild wars is also the only program where keys don't work.
Any thoughts what would cause it?

Maybe you have it set to run a particular configuration when Guild Wars starts - have a mess around with the G15 settings and turn this behaviour off - never found any use for it myself.

Just reinstalled GW, no effect.
Tried to run GW with g15s default configuration, no effect.
edit: it dind't work with another keyboard either, so g15 isn't the problem.

try a different usb slot. if it is a ps2 connector try a new keyboard or an old 1 that is usb.

Could be that the program you switch to keeps the focus. What program do you switch to? And do the keys you press in GW after switching back, affect the previous program? You can also try reinstalling the keyboard driver or switch USB slots as mentioned.