I use Windows XP and I recently bought the Speedoptimizer program online from Speedbit, the company who supplies Download Accelerator Plus (DAP). Speedoptimizer basically removes all temporary files. After installing and running Speedoptimizer, I had a computer crash and discovered I could not "Restore Windows to an earlier date", a Windows XP function. What I need to know, is whether Speedoptimizer will delete or block files needed to "Restore Windows to an earlier date". I have written to Speedoptimizer Support, twice, but have not received any answer. Could anybody advise me on this matter? I simply want to uninstall Speedoptimizer if it disables the "Restore Windows to an earlier date" date function. I have no intention to claim back money or critisize the Speedoptimizer program.