Just upgraded to Avast Internet Security 5 myself this morning (4 Feb 2010) and started having issues with Outlook 2007. Outlook stopped working due to a "conflict with Avast Anti-spam." Outlook attempted to repair itself then restarted. The second time Outlook crashed it actually disabled the Avast Antispam add-on, I had to go into Outlook and turn it back on. Does Outlook 2007's antispam application need to be turned off to use Avast's antispam? If so, how is this done--correctly? My concern is that I get repeat spam offenders in Outlook that Outlook by itself seemingly fails to block from future receipts. Thanks.