Yes I am experiencing it too. I am hoping patch 2 for SiteAdvisor 3.0 resolves this issue?
SAE 3.0 patch 2 is currently available and posted to the download server.
To provide search rating annotations, SAE uses scripts. When a search engine makes changes to the URL used to display search results, SAE needs updated scripts. Google made changes for search results in IE 8 in February of 2010.
Check the time stamps on this file:
C:\Program Files\McAfee\SiteAdvisor Enterprise\scripts\safe_ie.js
If the date is from December 2009, you are not getting updating scripts.
If you are behind a proxy, you will need SAE 3.0 HF 555832. See PD22690 for more information. This hotfix is available through escalating a service request to McAfee support.
This hotfix will be included in SAE 3.0 patch 3 which is currently targeting end of Q1 2011 for release.
The scripts file was newer. it does look like it is not a problem anymore.