A couple weeks ago, we reported the Google Shopping (Base) Feeds Processing Errors. In short, uploading your products to Google Base might have had major delay issues, depending on the size of that data file.
Now, a Google representative, has said the issues are now fixed. The Google Base Guy said in a Google Groups thread:
A feed processing issue has affected feeds that were uploaded between the 25-28th of November. This issue has caused feeds to remain in the "processing" state indefinitely.
The issue has been resolved, however if you have noticed the status "processing" for more than 3 days, please re-upload your feed to Google Base.
Took a while, but in about three more days, the issues should be all clear for you.
Forum discussion at Google Groups.