Hi all, I have a strange problem, my computer freezes after 15 - 20 minutes i connect to the internet, i had to restart my pc then. The problem disappears after two freeze. I scanned my C: drive for viruses and found nothing using AVG 7.1 (latest update files). Please tell me what's the problem. using OPERA 8.51 build 7712, windows xp sp2, pentium III 750 mhz, 256 MB RAM. the problem appears only when i surf the net using opera.