As some others have mentioned (complained about), it does take a long time, but that's just the nature of what it's doing, and all programs are going to be slow if they're not, they're not doing a good job. It did randomly quit the other day in the middle of a job, which I luckily checked on it and noticed, though I'm not sure if that was Eraser's or Windows' fault.
Decent program that does the job with minimal fuss.
