I suggest u to leave Avira 9 coz this is a most third class antivirus!
In place of it use two simple antivirues,
1) USB Disk Security - which will protect ur pc from infectin from USB disk only with out any updates! Download the trial version from http://www.zbshareware.com/setup.exe
2) and a Kaspersky! if u choose to use kasperkey I can help u to crack it!
So reply soon!