IPS Signature not updating?
I'm running SEP v.12.1.1101.401 on a mixed Server 2003/Server 2008R2/WinXP/Win7 environment. I've got two Server 2008R2 servers that are showing IPS signatures six weeks out of date, but when I open SEP on the server desktop, it shows the old date (7/27/2012) of the signatures, but the status display is "Secure". I checked in C:\ProgramData\Symantec\Symantec Endpoint Protection\12.1.1101.401.105\Data\Definitions\IPSDefs\ and the latest definition set on the management server is there (9/5/2012 at this writing), so it appears that the "client" server is downloading the package from the management server, but not applying it.
Other Server 2008R2 servers on the network running the same version of SEP off the same management server are up to date, and AntiVirus, Download Protection and SONAR definitions are up to date on the servers with out-of-date IPS signatures.