We (the Northern Nevada Regional MLS team) just heard from the Paragon tech team that Avast released an update today (6-27-2012); version 7.0.1426, and the virus definition version of 120627-0.
They said once they updated Avast on their test machine they could no longer reproduce the Trojan horse message that they reproduced yesterday.
So please let us (the NNRMLS team) know if, after you update your Avast program (if it has not updated automatically already) you still cannot get in. If you cannot you might have to clear your cache, and we can help you with that. Just call 823-8838 or email us at email@example.com.