SGS2 + CM9: 9.1.0 Release Stability

Been running 9.1.0 since the 29th last month, and never required any reboot whatsoever until today. This morning I was trying to get online, but was unable to. Rebooting solved the issue. Perhaps I should have tried turning airplane mode on and off first...

473 hours uptime (that's almost 20 days!)

Seems like no issue connecting to mobile data

All seems good, but unable to browse/whatsapp. Note that the signal icon did not turn to cyan colour.

Restarted; connectivity back to normal, but where the heck is my Data Usage icon?