I've recently had a huge spike in battery useage from the android system- up to 65% yesterday. Wierd, because I use Juice defender, and can get 1 1/2 days before the batt. woulld drop below 20%. What changed? Well, the top of the list in the Android system was the Google Backup Service (GBS).
http://code.google.com/android/backup/index.html
(did you know you can tap the battery picture and get a list of associated services?) GBS- that's the one that throws up the sync symbol on the Right side of the status bar. (When it appears on the left its Moto backup assistant). I found all my google accounts had sync symbols next to them, but the circles weren't spinning, so they were presumeably hung. >settings>Accounts>
[email protected]. I disabled them all, re-enabled them one at a time untill the sync was done. Its been 4 hours, the battery is not dying ~15% an hour on standby. Its not back to what it was, and now the VPN service is at the top of the Android system list. I use no VPN, DLNA is next, I don't use that either. I have Titanium Backup, and have frozen a few services& apps. But NONE that are com.motorola.*(anything).
When I was still haveing the sync symbol stuck, I even went back to stock, and the GBS was still at the top of the list.
If you have the same problem, that might help.