Your XP machine freezing is not associated with the file share. Are you trying to view files from the Windows 7 machine? This could possibly cause a small "freeze" but these problems are not related. Ensure your XP machine is not infected with a virus or malware. Instructions to do so can be found here. http://lynchburgcomputerrepair.com/VirusScan.htm
Let me know how things go. If there are no viruses this could be a HDD issue.
Hi We have to computers in our house one with Windows XP the other with Windows 7. We recently set up a home network with File Sharing. Since then we have been having trouble with the XP computer freezing up every time the Windows 7 computer is in use. It doesn't matter if its on the internet or in other applications on the computer. Router has been reset, ethernet card tested, changed ports on router, reset all settings on both computers. Problem is still happening. Any suggestions?