reported virus

I have attached two snapshots of avira av report identifying some of the temp files in windows/avast directory.

when I scan for viruses, avira doesnot find any in this folder. But periodically, one or two temp files alleged to be sending a trojan .

Are they false alarms?

Looks like you want Avria forum not Avast:
http://forum.avira.com/wbb

unp*.tmp files are temporary files from avast.
If you’re using two antivirus at the same time in the same computer, you’ll have trouble, sooner or later, conflicts, etc.