We have just released VPOP3 Antivirus v1.1.0. This is a major upgrade of the antivirus engine, and also fixes a problem which has just started of the antivirus updates not working properly.
All existing subscriptions for VPOP3 Antivirus will work without change with the new version of VPOP3 Antivirus, you just need to download the update (use the appropriate version for your version of VPOP3) and install it over your existing installation.
The update problem is due to a sudden, unannounced, configuration change on the database servers used by the antivirus software, so we had no warning of it, until the updates started failing consistently. We apologise for any inconvenience, but the sudden change has caught quite a few people out.