Running 2.2 on my 8310 with 220.127.116.11 and haven't had a glitch in the 3 hours it's been on there. I've not really taxed it much yet, but have poked around and all seems to work.
It sounds like I'm the exception based on these reports, and those from other forums. But my 4.5 install hasn't really caused me any grief at all with the 3rd party apps. I use.