Windows XP sp3...WLM at startup, been working ok, just started an error that address book cannot open and will shut down. I did a repair of WLM and no difference. So I tried a system restore and it works ok for a couple days and then does it again...seems about the same amount of days that I went back at restore time. What causes this? I cannot find much info on the internet to fix it. Is there a bad email or a registry entry.

thanks in advance