According to GSM Arena, you should get 20+ hours of talk time with your Maxx. You're way off from there.
Motorola Droid RAZR MAXX battery trial is over, meet our new champion [TEST] - GSMArena Blog
You may have a bad unit. Yes, things like Norton could be sapping battery; but that ought not matter to this degree. You could always try a factory reset and run without any apps for a day, but that would kind of suck. I'd see about getting a replacement, honestly. I wish I could give out better advice, but I just don't see what else is killing your battery. Anyone else have any ideas?