NTFS Encryption
I decided that the time had finally come for me to encrypt the home space on my hard drive of my laptop in case it gets nicked; I've been encrypting high-value information for years, but I thought the time to just do the whole home space had come.
So last night, I set it going. It started off suggesting it would take 12 hours. Okay, no worries, I'd rather not leave the laptop overnight but needs must. By the time I left work it had dropped to 6 hours, all going swimmingly.
Get in this morning, look at the progress bar; 92 days remaining. Oh dear; I mean I know I have a lot of files, but there's only 10G of stuff there. Next stop, true crypt I guess.