thank god for this thread and message boards in general!
ok i too have been plagued by this psu problem! at first i thought it might have been that my p5w dh's bios were old and needed updating, but after this thread i think i've found the culprit!
i am thinking that it would be a good idea to stay away from an antec psu after reading this thread. i will rma my neo430 in favour of anything else since it looks like some people said they still had problems, even with the newer serial number version of this psu (mine is the S0511 number).
bigdisk says the enermax liberty 500W fixed him up, so maybe i'll go with that one. any ideas? i'm using my computer for music, and use an external firewire audio interface, so i need to have the firewire ports functioning properly!