When I try to switch between tabs in either Safari or Firefox, the system hangs for about 5-10 seconds. This happens VERY frequently. Sometimes it happens when I simply click on a link. I installed Better Touch Tool (BTT) about 2-3 weeks ago (so I could use gestures to navigate between tabs), which I think is causing the problem (since it is programmed to work in both Safari/Firefox). I used to use MultiClutch and never experienced any of these issues. So, is the issue limited to BTT, or is it OS X related? How can I fix it? I did some research, but this doesn't appear to be a common problem and I cannot find a fix. Someone please help me before I trash my computer out of frustration.