SW Patch Windows dataclass data is not populated, SMP is not able to parse the dates for installed patches.
<event date="09/25/2014 12:18:18.1267279 +02:00" severity="2" hostName="xxxx" source="DataClassRowCollection.SetColumn" module="AeXSVC.exe" process="AeXSvc" pid="4436" thread="92" tickCount="81385643"><![CDATA[Invalid column [c3] value [3/24/2014] (fixed [[NULL()]]) for resource f36003c2-a9cc-4b99-83ab-5393bce30290: 'SW Patch Windows' (672caca3-d1d8-493f-a876-17e3cd83b2f6)]]></event>
SMP is attempting to parse the date using the current Altiris Service account locale which is not en-US (invariant) while clients are sending the dates in their locale format.
Change the System locale to "en-US" on the SMP while logged using Altiris service account.
Control Panel -> Regional and Languages
Change format to "English (United States)"
Applies To
7.5 SP1 HF3