This isn't 2.2.2 specific, it also happened in 2.2.1, but not before. The issue is that when i return from a locked screen, the wifi won't auto connect. I will head to the wifi settings, only to see that wifi is turned off (clearly i did not turn it off). The annoying part is that if i turn it back on, the ipod will associate with the nearest AP that it has credentials for, ***BUT*** it refuses to renew the DHCP lease, thus leaving it without an IP. I cannot force a DCHP renew by clicking the button either, it simply sits there and does nothing. The only fix for this i have found (other than a full restart) is to turn on the wifi, turn off the wifi, wait a min or two for the wifi unit's association cache to clear, then turn wifi back on and click on the desired AP right away. not exactly an automated system and extremely annoying... anyone experience this, or have any clues why this keeps happening? I really want to know why the wifi keeps turning itself off on its own. There isn't a log or dmesg of the wifi unit's activity is there?