Same error for me as well:
Internal error has occurred in module aswar scan function failed!, function A000010E
And here's something alittle odd, since this error began my MSI CoreCenter monitoring s\w has started reporting the incorrect fan speed for the CPU. The fan speed would fall below the low rpm limit and give me an alarm. I checked the fan and connections and also checked that the fan was working OK in the BIOS, everything looked fine and the speed in the BIOS was correct. I have since uninstalled\re installed the app, tried different monitoring s\w like speedfan and so far found that the only solution was to set smartfan in the BIOS and now all the monitoring s\w seems to work, however this does not allow me to adjust fan speeds. Very strange. I have not uninstalled avast yet as I can not figure out the connection,,,,yet.
However the original problem seems to be the key as it would hang my system at times. I had verified this this with matching the system time with the crash time and the time the avast error was reported in the event log. They all match.
I have the latest avast as of this morning 2/3/06
Any thoughts welcome