What model Fluval was it? And you do know they have a warrenty. And you do no that just because one person had a bad experience doesn't mean that they are all poorly made.
As for me, even thought that my opinion is mine and should not be addressed to all of them, I think all aquaclear filters are horrible.
it was a 204. i had tried it out and as soon as it packed up i didnt want a replacement im sure there are good ones but i now run 12 eheims of varying sizes and apart from an o ring going on one the rest have been great. although they cost more, they aint the market leader for nothing....
(oh and you are right those aquaclear things are the cheapest 'orrible things going..)