Someone requested that the author add history deletion... and he did... and it's in the notes if you look carefully... but if you just run the program, besides the obvious deletion of cache files, it will also completely wipe out your history WITHOUT TELLING YOU. Cache files are always safe to delete, but history files are often valuable things to have around. It is actually user's data, as far as I'm concerned. Nothing should erase your data without telling you. I got bit and was not able to call back some recent pages I wanted to get back to. Plus the URL autocompletion I had gotten accustomed to stopped working. If I didn't believe it was an honest mistake/oversight on the part of the author, I'd actually consider this borderline malware.