Has anyone else noticed any of their customers complaining of degradation of battery life on their ATT Blackberry devices? I know this may be going a bit out on a limb, but does anyone think the "recent" upgrades of ATT's network may cause extra communication with the non 3g devices, or cause any other issues previously unforeseen?

Oddly enough, T-mobile devices seem to be unaffected. The ATT devices range all across the board, from 81xx to 87xx

Appreciate any feedback in advance