My v 3.6.3 seems to be working properly.
Have any add-ons failed the upgrade from the previous version of FF?
Try a simple test. Start Firefox in it's Safe Mode and see if Google behaves properly then.
How to start Firefox in Safe Mode.
Firefox 3.6.3 has been doing some odd things on all of my PCs.
When I open any link in a new tab I always get "page will not load" screen, for example I search for anything on google open the first few results in new tabs and none of them load. I click refresh on the new tabs and presto it loads fine. It can't be a virus I'm having the same issues with my netbook/desktop/laptop. I don't think its an issue with my internet connection as I have no problems with XBL or netflicks loading. I tried running in safe mode to no avail. If firefox doesn't address this I think I might just switch to googlechrome.
Any of you having similar issues?