Effective immediately, the Shavlik NetChk Agent will begin using a smaller threat defintion file format. The size of the file will decrease from more than 100Mb to approximately 43Mb. The change to the Version 3.9 file format will force a full update. Users may see an increase in bandwidth utilization. Timeouts on the Shavlik downloads server will be rare, but may occur. If you experience a timeout, wait and attempt to download the new threat definition file a few minutes later.