Access Tokens and Threads

[Elad Lahav]

I've been looking into the annoying "Set ThreadImpersonationToken handle" 
messages. In order to fix this issue, I need to know a few things:
1. Does Wine maintain access tokens at all? It seems that most of the relevant 
functions (e.g., NtQueryInformationThread and NtSetInformationThread) simply 
ignore it.
2. It looks like the thread's token is a part of the so-called "security 
descriptor" member of the thread's SECURITY_ATTRIBUTES structure. Does anyone 
know what structure this descriptor points to?

Elad