I have a story to tell. I've had a white 928 since launch. Never had freezing problems until GDR2. I applied the developer GDR3 update and still had freezing problems. I started to use a Moto X for a while for work (I switch a lot) and went back to my 928 last week because I was flying to Dallas this last weekend and wanted to use my 928 beause of the better camera and my music pass. It had been a few months since I used it so I did a hard reset and set it back up again, restored from my backup and it pulled down the zillion apps I had installed and it still was freezing a time or two a day.
Well, Friday morning rolls around and I'm about to head to the airport and bam, I drop my 928, it hits some cement steps and totally shatters. Crap. Lucky I had a black 928 sitting in a drawer at work that somebody wasn't using so I drove to work on my way and grabbed it and as I was making my buddy drive to the Airport I set up that bad boy up. I also restored from backup, but for whatever reason it didn't pull down a single app from my backup. I can only assume because my last backup was from a GDR3 device that it won't restore those to an older device. I don't know if it was Amber or what... Well, I added a few apps (Facebook Beta was one) and got my accounts configured and downloaded some music again so I had crap to do on the plane. I also did use Sysapp pusher to get all the Nokia apps like accessories, audio, extras+info....
No lockups so far...
When I got to my final destination of Waco Friday night (Thanks for the freezing ice and snow Dallas) I downloaded the Developer app, to let me phone upgrade to GDR3. Well, once I did that and did a search for updates it listed that I need to appy 4 actuall updates. (I wish I would have taken a screen shot of that.) I applied those four and i'm now on GDR3.
I went the entire weekend, through today and not a single screen lockup. I've been pretty confidant that it is a software issue because we have like 5 of these in use and all 5 of those users are having lockups. They are all on GDR2/Amber.
Normally my device would have froze by now, and by posting this I've probably cursed myself. I also don't know if this info would help anybody, but I thought I'd share. :grin: