I can't get any shortcuts working, even the default ones.
gongoscho - opera works well with my Xperia X1 with 3G and WiFi.
I suggest you check:
opera:config -> Network -> Conn Mgr Auto Detect Network is checked.
opera:config -> Network -> Conn Mgr Destination GUID Index
and make sure it points to "The Internet" as your network connection.
You can find the GUID key at:
If that still doesn't work, check Settings -> Connections -> Advanced and make sure your cellular connection (GPRS/EDGE/3G/HSDPA) is configured correctly.