windower4 shuts down when i try to search any website

hi there, when im playing FFXi with windower 4, it will shut FFXI down if i start to search anything on my webbrowser, it never used to do this, then every now and then while im checking FFXIwiki it would come up with an error and force close ffxi, now how ever i cant even change a webpage while playing ffxi or it force shuts down FFXI, is there anything i can do to resove this as i like to check wiki alot lol and dont wish to close FFXI evey time i want to change webpage on wiki lol,

thank you for the time. =]

This is very strange, and very new. I've never heard of this before. No idea what could be causing that I'm afraid.

ok ty