Norton NIS 2007 - Crashing problem

I already posted a topic here: http://www.tomshardware.co.uk/foru [...] oot-sector
At first I thought my hardware may be at fault, but since a format and re-install of my system I have pinpointed that Norton Internet Security 2007 is the problem here.

Im running XP Pro SP2, I did fresh install of windows and apps etc and the system was running fine. Then I installed Norton NIS 2007 and now have the following problem:- When booting up windows it gets to the welcome screen and it re-boots, no reason and no error on reboot or asking to try safe mode, just restarts? Usually second time round it boots up fine and no problems? This happens pretty much all the time, first boot fails and second if not third work fine and I don’t have to touch anything. I uninstalled Norton and problem went away, restarts and boot ups worked flawlesly, put Norton back on and problem started again, last night after Norton updates it took 5 attempts of just rebooting itself over and over until finalled Desktop loaded. Im not sure what its conflicting with? Anyone any ideas on this?

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Asus M2N32-SLI Deluxe WiFi Retail, AMD 64 X2 5000+ Black Edition, Coolermaster Hyper TX2 CPU Cooler, 2 x 1GB Kingston HyperX DDR2-6400 800MHz, 1 x Raptor, 2 x Serial Ata, PCI-e ATI Radeon HD 2600XT Graphics Card, Viper PSU and all the other bits n bobs. XP Pro SP2

Thanks for the response. I was thinking how odd this was and thought it could be my Asus motherboard, after all if I wasnt alone then others should have surely experienced this problem? So I emailed them for expert advice and was basically told "dont know, maybe change your motherboard" I mean what kind of customer service is that for a purchase of their £120 motherboard!?

I will email Symantec and see if they can advise. If not then new motherboard I guess.

Thanks.