MOTM

I know that a closed-back cabinet arrangement is preferable, but are 
there any real problems associated with open-back cabinets as far as 
dust go?  From what I can tell (me being a virginal motm-er), all the 
pots are sealed... should be no problem, right?  or...?

-Paul
http://mp3.com/puffboy  (no motm on there...yet)
http://www.puffboy.com