Microsoft has just updated KB 2802399:
Memory leaks when you use an App-V package that contains icons in System Center Configuration Manager 2007 SP2
Symptoms
Consider the following scenario:
- You build a three-tier System Center Configuration Manager 2007 Service Pack 2 (SP2) hierarchy that has a central site, a child primary site, and a secondary site.
- You add a Microsoft Application Virtualization (App-V) virtual application package to the central site.
- The App-V package contains icons.
- You distribute the App-V package to all distribution points (DPs).
In this scenario, memory usage on the child primary site increases based on the size of the icons included in the App-V package. Additionally, if you create another package by using the same App-V source, or by clicking Update Distribution Points on the existing package, more memory is leaked on the child primary site.
Full details:
http://support.microsoft.com/kb/2802399