UPHClean v1.6 Security Vulnerability Fix
Mon, Sep 13 2010
The previous version of UPHClean did not call the system executable using quotes. This could in some scenarios allow a local user to elevate privileges. This issue has now been addressed in the current version. Thanks to Thierry Zoller from Verizon Business...
Источник:
http://blogs.technet.com/b/uphclean/
Правда, я ставил всегда v2.0 build 2.0.49.0 (beta) и никогда проблем не было.