Hello, I'm experiencing various problems after upgrading my acer a100 to 3.2.1. The system now lags constantly, applications crash pretty often, one time the system restarted itself, games lag for 1,2,3 seconds before resuming, when changing orientation I have to wait 1-2 seconds, stuff like this. It feels like the system lacks memory all the time. What can I do to fix this? Is there a way to safely downgrade to 3.2.0 ?