Right, first off, this isn't related to my problem in anyway.

I was thinking, could loud music with excessive bass, or even just a LOT of it, damage HDD's in some way? As I'm thinking, if music with a lot of bass can cause water to 'wobble'/ripple or whatever it does, could the same thing happen to the platters in an HDD? Ei making them wobble and maybe cause them to hit the write head, causing scratching?

Just thought I would throw that out there while I blow my windows out the frames

It is possible.
Although there's more risk from having your subs too near the HDD and the magnetic field disrupting the bits

I guess so.

A mate of mine used to put his laptop on his rather large guitar amp, he experienced many problems, mainly corrupt data. After six months the hard drive packed in all together...

Cheers for that guys, wanted to ask that for ages lol, I reckon I'll try it at college on one of their OLD drives, like an 8Gb one

If I had the money, I would buy an MTX Jackhammer and play bass through it and put a hard drive in front to find out for you. Unfortunately, right now, I have neither a spare MTX Jackhammer sub or a spare hard drive for wrecking.

i was also worried about this, but i read summat about the frequencies being different, so its doesnt matter, but that was probably BS. from first-hand experience, ive had 3, albeit puny, subwoofers sat next to my PC (not at the same time) over the past 4 or 5 years and none of them have caused any problems with any of the 3 hard drives i have had in that time (drives replaced for size/redundancy, not mechanical failure)

http://www.youtube.com/watch?v=tDacjrSCeq4

slightly related, and rather funny

When you're running a big boy sub then you'll know about it.
The sub with the Logitec Z-5500 actually has a warning on it not to put it within 50cm of your PC.

I used to be able to wipe a PC in seconds by placing it in the boot of my old car due to the system in there.

I have loud hifi playing just 30cm from my PC and have done for several years. Said PC has 4 hdds in it. Never had a problem. Not exactly scientific though.

What speakers? Size? Magnet Weight?

Acoustic Energy Aegis Evo Ones god knows on their specs, but I'd guess the mids are maybe 15cm-ish diameter? I play lots of different styles, but there is a lot of house/garage/r&b/hip-hop/d&b at high volume. I love music, I love high volume and I love a well played/programmed bassline

Ah, they're fairly small magnets and are shielded inside to cabinets.

Wouldn't a solid state drive be better?

its obviously immune to the vibrations, but AFAIK it would still be vulnerable to the electromagnetic waves from the magnets, so if its a small/shielded amp SSDs should be fine

Most computer-orientated "subs" will be shielded because they are designed to be near other (more delicate) electronic equipment - but yes vibrational energy can upset electronic components - which is why you will find the amp modules on more expensive, more powerful active subs built into their own enclosure (away from the direct assault of the air waves generated by the cone) - and it is why hardcore streetbassers advise not to mount amps directly to any enclosure.

This all said, you're going to have to be generating some serious SPL to really upset most things (unless they're poorly made and likely to break anyway) - and as mentioned, chances are, it's the magnets (unless you've a shielded design) that'll do the most harm.