Here is an info from Trend:
Urgent Notification - Trend Micro Pattern File 2.594.00 Causes High
CPU Utilization
On April 22, 2005 at approximately 3:30 pm Pacific (11:30pm GMT) Trend Micro posted a pattern file (2.594.00) which had the potential to interact with certain computing configurations and cause computer performance issues for some users of PC-cillin, OfficeScan (including the OfficeScan component of Client/Server Suite for SMB, and Client/Server/Messaging Suite for SMB), and ServerProtect for NT.
Uwe |