Lots of annoying blank Unfuddle Messages

Hi,

I am currently getting blank messages in unfuddle almost on a daily basis. Other regular feedback works so the connection between the site and unfuddle is ok. It is just these annoying blank messages that seem random that keep getting sent to unfuddle.

Its usually in groups of 10 or more messages - all blank.

What is the problem? Is there a way for me to filter these annoying messages so that it does not get sent to unfuddle?

I am currently using Unfuddle feedback 6.x-1.1
Feedback 6.x-2.0
Drupal 6.14
PHP 5
Mysql 5
Apache 2

Thanks