Hello,
The only unusual error message I see in the event logs is for the DNS server. It reads "The DNS server has encountered a critical error from the Active Directory. Check that the Active Directory is functioning properly. The event data contains the error." (ID 4015).
For 3rd party applications I do have Symantec Antivirus Enterprise Edition 10.0 running. I did not disable this before I did the install, so that could be part of the problem. However, the applications log shows no errors.
I do not have APC Powerchut running.