A 6.0 memory leak will be fixed in the next HFA.
Regarding 6.5 or 7.0
From the command line run the following command:
1.gflags -i vsmon +ust(gflags is part of this package:
Download details: Windows XP SP2 Support Tools for Advanced Users your system
2.NOTE: this change will make vsmon consume much more memory than before and also grow much faster than before. The bigger it gets, the easier it would be to find the source of the leak.
3.Once vsmon is large enough take a userdump of vsmon
4.Send dumps + tvdebug.log to support.
5.Turn off gflags by running:gflags -i vsmon -ust
HtH