I've actually recently switched back to Firefox from Chrome myself. I began seeing things that... well... just made me awfully uncomfortable, frankly. No real evidence of anything intrusive, but I became uncomfortable with how the program works even in Linux.Your problem sounds bizarre and extremely unlikely, frankly. Make sure you're running the actual programs you think you are, and not using a different shortcut or something (right click on the menu item, select "properties" and check that the "Target:" box is correct). If you really can't get it to stop, sounds like some fucked up malware that doesn't know enough to not tip off the user or something.