http://forum.xda-developers.com/showthread.php?t=1977708 and http://www.glbenchmark.com/phonedetails.jsp?benchmark=glpro25&D=Google+Nexus+4&testgroup=overall (AT's results apparently) an update from AT would be nice to see what issue was seemed to be the problem and how it was resolved. I'm thinking bad unit or software update. I'd take the AT "preview" with a grain of salt.