We just started testing WPA2 on our IOS APs & WLCs; no problems yet except for with the 1250. We have a 1250 running IOS 124-10b.JDA.
Some users get authenticated and get a DHCP address no problems. A handful of users (no common thread yet in terms of laptop/wireless NIC/wireless driver version) get associated, then authenticated, but never get a DHCP address. If we set a static IP in their wireless settings, they get on the network just fine.
These users had NO problems when only WPA TKIP was configured.