What is it?

uphclean.exe is associated with Windows User profile cleanup utility.

What does it do?

Quote from MS

"A service to help with slow log off and unreconciled profile problems."

More info:

Read more about uphclean.exe @ [url=http://www.microsoft.com/downloads/details.aspx?FamilyID=1b286e6d-8912-4e18-b570-42470e2f3582&displaylang=en]Microsoft.com[/url]