I have found a Blade with a similar problem on Modaco, although it seems to be a software issue. Since then I have tried everything I can think of- wiped data, cache dalvik, system, boot. I even installed CM7 and tried a gingerbread ROM via the TPT method (using different partition sizes)- all to no avail. I even tried preventing phone from sleeping when locked, but it isn't helping either. Have any of you guys got any suggestions?
I realize that this is probably a hardware problem, and suggestions on this forum are useless. But I jsut wanted to squeeze a little more life out of my blade before buying a new phone this Christmas- especially since the new Android 4.2 will be probably be coming to our Blade soon. Thanks for any help guys!