Safari

I.m having major problems with safari and i.m wondering how to fix it. I boot it up and it works fine for a while but when i start to use the tabbed browsing, or just have more than one safari window open, the windows continue to load forever and never actually display a page...i.ve restarted the 'puter and everything...anyone know how to fix this...i.m used to windoze so i would normally uninstall the app and re-install it...but i guess i can.t do that in this case? anyone know? I.d appreciate the help...I hate this microsoft internet explorer...

Thanks,
Christien