Soon after I first came here, I joined Xoria's Hackers. I spent some time deciding which Bond villain to be, and finally settled on Alec Trevelyan. Unfortunately, I spelled it AlecTrevalyan. I noticed this after a few days, but since at the time the FLHook player ID and PM coding was a little dodgy when you renamed and I couldn't afford it either. It irritated me to no end, it did, but it didn't feel fixable.
After I came back a few months ago, those characters had been wiped and I could recreate them properly. Stil haven't had the forum account name's spelling fixed though...
On the same note, one of my Hacker friends managed to rename himself /? recently. I think that takes the cake.