So.. Yeah i flashed ICS alpha 6. I was on 4 before i flashed 6. I followed some dudes instructions to do a factory reset then flash the rom, then gapps then boot up. I got up to hitting the button to put my gmail info in and it made the video split into 2 and i could never get past that point. I def recommend if you are going to use alpha6 to completely wipe. Wipe Dalvik cache. Then do the rom. Boot it up. Then reboot into recovery to flash gapps. Will let you guys know how its performing. Hopefully its as awesome as alpha 4. I just could never get maps working in 4.
I have a similar problem. I flashed a6, everything booted up and ran fine (cleared data/cache/etc.). Then I rebooted into recovery, wiped davlik, cache, battery stats, and flashed gapps. Phone booted up fine but no matter what I do my phone always freezes up during the intro screen (add account). I've tried sign-in, do it later, etc. etc. and I always get sent to a blank screen and the only thing I can do is hit menu and "Wireless Settings" comes up and just allows me to choose roaming options, I can't do anything else. I've tried reflashing the rom as well as gapps 4 times and always get the same results...