Of course. After a few reboots, problem seems to be intermittent. Right now, Firefox is handling it well, nothing is affected (at least nothing visible), Opera still falls apart, Chrome seems OK, but I can't use buttons in the upper right corner (as if the window had no focus). Funny thing is, I own Gateway P7811FX, same as the author of the topic You mentioned, wonder, if it's relevant... Still, topic, I think, is more related to Firefox itself, while my problem seems to be more about device and drivers. Maybe later I'll try manually delete anything referencing Synaptics from the registry and system folders, maybe some config file got damaged.