This lovely gem comes from Easy CD Creator 5 Platinum, and shows when you’re erasing a CD-RW

The remaining time listed is only an approximation. Some erases may take up to 10 minutes longer than what appears on the progress bar.

Update: Okay, I’ve decided this actually not the best dialog box ever even though it struck me as quite funny at the time, and anything will have a very hard time beating this message I got earlier this year.