Tech regrets

Since the week is coming to a close I thought that it would be interesting to reminisce about tech regrets.  Maybe something you bought, something you didn't buy, something you upgraded or just something that you wish you had.

I'll start, just top get the ball rolling.  The odd thing is, the more I think about this, the more tech related regrets that I have.  Here are a couple:

HP iPAQ
Over the years I've chucked too much money at HP in the hope that the next iPAQ will be so much better than my last one.  Each iteration seems to be nothing more than a minor upgrade (little more storage, WiFi, that kind of thing) and a different version of Windows Mobile.  Why can't HP just stick a decent amount of memory into an iPAQ (4GB say) so I don't have to juggle memory cards.

Liquid-cooled PC
I like the idea of a liquid-cooled PC because it offers better cooling that's more responsive to temperature changes.  But it's a hassle and parts are unreliable.  Over a period of four and a half months I went through two pumps by two separate companies.  The first pump died after emitting a flash of light and a lot of smoke (that was a Thermaltake pump) and the other pump (a Danger Den) suffered a cracked case.  I attempted a fix with epoxy resin but a week or so later it broke some more.  Luckily I wasn't running water through the system but instead a non-conductive solution so the PC survived. 

What's been your biggest tech regret?