Upon restart of the IDE after a crash, Visual Assist ensures its database of symbols is valid. If necessary, Visual Assist will reparse source and rebuild its database. This check ensures database symbols are current when you resume editing.
You can disable the verification by setting the following BINARY value in the registry:
HKCU\Software\Whole Tomato\Visual Assist X\<IDE spec>\VerifyDbOnLoad = 00
Restore default behavior by setting the value to 01.