Broswer shuts down randomly

hey there i was preivoulsy posting this in the hijackthis forum, but LDtate to me to move it here. While im browsing online, using either firefox or ie, the internet browsers seems to close spontaneously while broswing, i haven't really noticed a trend in the sites, but its frustrating, any help? LDtate helped me so my pc is clean.

Please tell us more about your machine, your internet connection, and your local network if any.

Intel Pendtium D CPU 2.80ghz,2.0gb ram, Nvidia Geforce 7300LE, has never had any problems before, Im on a wrieless connection to a network in my home, through a dlink router, standard telus dsl connection.

Windows XP? go to: Control Panel - Network Connection Check the "Status" of your Wireless Connection. You Probably have Local Area Network - Disconnected Wireless Connection - Connected (should be "connected", but may be "limited or no connection") Please let us know.

Try the following:

• Go to Start | Run, type cmd and press Enter
• Copy the following command:

  ipconfig /flushdns

• Click the [external image: Posted Image] image button in the upper left portion of the command prompt window title bar and choose Edit | Paste
• Press Enter to execute the command
• Repeat steps 3 and 4 with the following command:

  ipconfig /registerdns

• Close your Internet browser and reopen, try signing in again
• If you are still having issues, repeat steps 3 and 4 with the following command:

  netsh winsock reset catalog

• Again, you may need to close and reopen your browser

Post back with your progress.

Best Regards