After updating to Nokia Java Runtime 2.0 I encountered problem when connecting to my server with PaderSyncSFTP. (http://www.pader-sync.com/products.html?mobile_sftp_client) Application seems to work fine until you connect to your server and it hangs on displaying "opening SFTP channel". This happened every time I tried it. It just won't go past that point.

After uninstalling this new runtime it worked once again normally.

Phone: N97
Firmware: V 11.0.021