Possible false positive with AMD/ATI driver update atiumdag.dll

Just updated my Radeon HD 6670 drivers and during the AMD/ATI installation NIS blocked atiumdag.dll and reported the following:

 

Full Path: c:\users\{username}\appdata\local\temp\{3af0d830-e0e9-4ec7-8f7e-9b07b975de43}\b136646\atiumdag.dll
Threat: Suspicious.Cloud.7.F
____________________________
____________________________
On computers as of Not Available
Last Used 4/25/2012 at 1:33:49 PM
Startup Item No
Launched No
____________________________
____________________________
Unknown
Number of users in the Norton Community that have used this file: Unknown
____________________________
Unknown
This file release is currently not known.
____________________________
High
This file risk is high.
____________________________
Threat Details
Threat type: Heuristic Virus. Detection of a threat based on malware heuristics.
____________________________

____________________________
File Actions
File: c:\users\{username}\appdata\local\temp\{3af0d830-e0e9-4ec7-8f7e-9b07b975de43}\b136646\atiumdag.dll
Removed
____________________________
File Thumbprint - SHA:
fab8b74fe98d8b0e6a988deda9a852e9276170cc4eb116265752604681c33f98
____________________________
File Thumbprint - MD5:
d02adf06c62ac91e2ecd478df3c9af6e
____________________________