*
Before doing anything else, be sure your avast is up-to-date. There were 2 updates on 8/27/04. Once updated, do a re-scan.
Since these files are all in TEMP or Temporary Interternet Files, it should be safe to delete all of them. There is no need to repair these files since they are only temporary in their use.
If, by chance, you are not allowed to delete them (or you feel uncomfortable with deleting them), then send them to the Virus Chest.
*