Getting blue screens with 'npf.sys' messages.
This is not directly related to Foglight products but may be indirectly related.
'npf.sys' is part of WinPcap and a few Foglight products use WinPcap.
Foglight Transaction Recorder (FTR) uses WinPcap.
This can be disabled through the Intelligent Agent Web site(through the configure button) or via a registry setting.
HKEY_LOCAL_MACHINE | Software | Quest Software | FoglightIntelligent Agent | Set NetworkCollector = 0