You will probably have received an email from Google Base this morning stating that Google Base have made changes to their Terms Of Service. When you login to your account at base.google.com/de/co.uk you will be greeted by this page
 

From here, the drop down select box will give the opportunity to select the appropriate country. After doing so you will move …

The messages displayed within the data quality tab are really a warning and to draw your attention to ways you could improve the quality of your feed. They will not effect the feed processing but could be harming your results. If you can resolve these issues by including the product_type, condition, UPC values or shortening/lengthening titles and descriptions then you would …

Firstly, is this a new set-up, have you changed your password recently?
A password change can at times take hours to take effect and should only be changed is really necessary. Allow it some time to establish and try again.

No, only items with a fixed price are permitted on Google Base, the displayed price must match that of the price displayed on the items url. You can upload all BUY NOW items, however, as eBay already send your items to Google Base, in my eyes it is a redundant task for each individual to carry out as most have …

If you see an item listed at a price that does not match that shown on the linked url, then report it to Google here:
http://base.google.com/support/bin/request.py?contact_type=policy