I just started using Eraser recently. Initially, I used the right click to erase some files and it was immediate with a setting of 3 passes, pseudorandom, and cluster tips. Today, I used it to erase my recycling bin which was about 100mb with the same settings and it took about 15 minutes. This seemed like a long time compared to other eraser apps that I have used. Is this normal? Why do some apps do it quicker?