iTunes will not download podcast artwork

[iGuardian]

iTunes won't download most podcast artwork for me.. especially with video podcasts (some audio ones do have the album art).

I have to manually add the art per-episode... it's very annoying, and I have no idea how to fix it.

Is this happening to anyone else?

 

[mattportner]

Has no one found a solution to this?
It's been bugging me for ages.