In reporting the problem, which began with Update to the 5.1 version series, it's unclear whether this is something that can be fixed by Avast! I don't know exactly what change was made from 5.0 to 5.1 that caused the conflict. They needed to be alerted due to the
False Positive implications, as that can cause a user to conclude they have a Malware problem. I was literally down for days trying to isolate the Malware problem. Rapport operates as a passive protector and doesn't do pop-up type alerts. So, you only discover the problem if you look at the log or use the automatic weekly report feature. What would you conclude if you suddenly went from no errors of that type to hundreds in your Rapport log? I had to put my home business system in quarantine and run backups, malware scan checks, and restores.
Hopefully, any other Rapport users can confirm my observations.
I don't know if there is any way to disable the specific conflict cause in Avast! The only solution which maintains protection and both products is to move back to 5.0.677, which is the best choice so far. Otherwise, the false positives might mask a real problem.
If a Bank requires use of Rapport to connect to online Banking services, you're stuck. Most are recommending and not requiring the product, but that could change. Look at the list of Banks using Rapport at bottom of Trusteer homepage, including Bank of America:
http://www.trusteer.com/