Posté par: igor51 le décembre 31, 2012, 01:41:09
Some users of Microsoft antimalware products have reported a performance issue with signature definition versions starting with 1.141.2400.0 (12/21/2012 1920 UTC).
The current definition files, since 1.141.2639.0 (12/27/2012 0625 UTC), resolve this issue. If you have a signature set in the affected range, please update to the current definition files.
Shannon Sabens
MMPC
Source: Update signature definitions to resolve performance issues in definitions starting with 1.141.2400.0 (http://blogs.technet.com/b/mmpc/archive/2012/12/27/update-signature-definitions-to-resolve-performance-issues-in-definitions-starting-with-1-141-2400-0.aspx)