Used XP Home on my machine for 2 years. Suddenly the log on required me to click on my account. Nothing else changed. But I checked (in user accounts) to go back to a "clean" start, and found a new user account that appeared out of nowhere. I deleted it. Then I notived at startup that the startup screen said that I was using XP PROFESSIONAL. How on earth could that happen. Any ideas?? 1 person needs an answerI do too