I have an original Windows XP disc which came bundled with my HP machine. I always used to be able to install and activate it without any problems until a week back when after an install, XP asked me to call customer service and ask for a new key. I called but customer service was closed for the weekend. I was impatient so I used a hack anyway. The thing is I wan't to understand why it happened. A very knowledgable acquaintance who is currently being paid to test Vista told me that once you have installed XP using on a certain machine over 30 times, it will ask you to call Microsoft. It is quite possible that I have installed XP over 30 times on that system. I can prove that I have an original copy because I have the certificate of authenticity label stuck on to the system casing. Your thoughts on this?