A coincidence that the previous thread deals with filtering issues. Here is an example of what I've got:
Start a search for 'file sharing'
Clearly, Shareaza will return results based on information other than just the filename... good and very intuitive.
Notice that a number of the returned results are for Shareaza itself and have the word 'Ultimate' in the Description field (the same field that caused the hit).
Try to filter on that word using '-Ultimate'... no effect. (issue #1)
Clear that filter and try '-Shareaza' instead... works to remove most, but for some reason, not all occurrences. (issue #2)