Last week I've upgraded my Android from 1.6 to 2.1 (users of Xperia devices in Czech Republic without rooted phone wasn't able to do it before). Since that time we aren't able to connect to secured WiFi in spite of the fact that we didn't have this problem before upgrade. For example: I need to use WiFi at our University and I know both, the login and the password. Android 2.1 detects that WiFi is available but it doesn't allow to activate my device within the network and gain IP adress. I tried to install a certificate to the sdcard too (it wasn't necessery with 1.6) but my next attempt failed again. I think it is quite a serious problem - ability of wifi connection is one of the most important things I demand from my phone. I suppose that users from some other countries, where Android 2.1 is available for longer time than one week, found some solution. My English isn't brilliant but I hope, that you can understand my question .