Having same problem. I haven't played it for a while, went to go on, notified of 1.15 patch to install. After numerous attempts, restarting modem, router, PS3, deleting all save and patch files on PS3, all I get is the wonderful 80710723 error. Sure would be nice if we could get an answer. I have been hopping around different forums trying to find anything, but alas, to no avail.