Mass Effect 3's intergalactic glory. Apparently, the patch that fixed the face import bug has broken things elsewhere – specifically, some players are experiencing crashes when connecting to EA's servers.
Shepards encountering this issue are encouraged to post about it in this BioWare thread, where development is currently farming user data in order to better understand the problem and find a solution. The good news is that the error appears to be periodic rather than consistent, with some affected players able to connect via persistence and willpower. There are also reports that re-patching can resolve the issue, but for heaven's sake please be careful when deleting ME3's system cache from your Xbox's hard drive. Save files are precious, fragile things.