either incompatible w/my computer [pc-xp-ie8] or it is horrible. Computer behaved as if It just had malware place in it PLUS it didn't even place itself on any of my add/remove programs. Crashed/froze computer PLUS it left behind bits and pieces of itself! after removing it I had to shut down and reboot SEVERAL times to get my computer back to PRE Quttera-very frustrating and unneccessary on their part!