I have been getting this error since I installed Vista Home Premium two
months ago.
Sometimes this pop-up is seen (most times) but sometimes it is not seen.
I have applied all Defender updates from the Windows Update site.

Also, it appears that my Vista gadgets do not show when this Defender pop-up
is seen. Only when the Defender error is NOT seen at boot do I actually get
to see my gadgets (weird).

Any thoughts? I've already gone to the Defender forums with NO success.
This forum is located at:
[url]http://www.microsoft.com/athome/security/spyware/software/newsgroups/default.mspx[/url]

Thanks,
Walter