anyone upgraded from 4.0 to 4.01 and noticed a slow/laggy with there phones. heres an example of what my does i just click on setting tab and it takes 30sec to a min just to load up and when im on cydia it takes forever. this happen to me when i was trying to get mywi to work but it was a no-go for me so i restored my phone and updated at the same time from 4.0 to 4.0.1 and JB it again and band slow as hell. i have also close all backgrounds. and saved my shsh on the 4.0 and not the 4.0.1... also is it possible to down grade from 4.0.1 to 4.0?

can someone please help me out..