[SLE] wireless mice problem

Hi! I'm running 10.1 and everything is smooth except one annoying problem. My wireless mice (i've tried 2: microsoft standard wireless mouse and logitech v500) freeze after not being used for around 5 minutes. Reconnect buttons do not help. Keyboard still works though, but when i try to log out - the whole system freezes and i need to manually shut it down. I'm using gnome desktop. I've tried various drivers from what i could find in yast, i've looked thru power management sections, but couldn't get any result. This thing also happened during installation once, but seemingly didn't have effect on it. Is there something i can do about it besides getting a wired mouse?