Can anyone shed some light on the purpose of the following registry
values and how they relate to DLU?

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileList\<sid>]
"Volatile Stamp"=REG_BINARY

These values seem to change after each eDir login, but i'd like to
understand exactly what data is being recorded and how it relates to
expiration of the local profile based on the number of day volatile user
caching is configured with. How can I decipher these time stamps?

I've looked at some other ZEN related values and notation for the time
stamps was "seconds since 01/01/1970".