Had a bit of weird message from Google Froogle Feeder Today.

I have using it for ages with no problems - until this evening. I uploaded my feed from zen cart as usual and then received an email from google.

Clicking on the feed status link says the below:

Prohibited word in attribute: description (6 errors)

Please check our Programme Policies and make sure that you are not submitting any prohibited items.
Learn more.

Examples:
Item Nr. Line No.
99 1,886
101 1,924
196 3,729
198 3,767
199 3,786

The thing being - my description field is the exact same for every single line? And why only start giving me a problem today?

Edit - the desctiption field simply says: Rich Tone Music Ltd - Online Guitar Store

Seems strange - and i'm baffled. Answers on a postcard please?