I am facing a quite interesting situation. I just upgraded my ASA 5520 from 7.0(5) to 7.2(1) with the same config file. The problem is that all of a sudden the ASA reboots and I receive this error message:
message #65 : assertion "0" failed: file "block.c", line 874
Memory usage goes to 100%, CPU keeps low (up to 5%). Any ideas on this?