I've been using both a UK and an AT&T Pre3 for several weeks now and loving it.
After returning from Europe last week I started getting messages about the 2.2.3 OTA on my AT&T but always hit "later" as I wanted to use the patch to remove the AT&T limits on PAN Bluetooth but didn't have time to do it.
Well yesterday my phone updated itself to 2.2.3 (I swear I didn't tell it to!) and now my battery drains MUCH faster than before.
Has anyone else seen this? I've tried rebooting which didn't help...have NOT re-installed all my patches that the OTA nuked so maybe those will help.