When i browse safari with different website was fine but when i load up yahoo mail to check my email, it turn out to be sluggish or even to the point that it will not load. the other website that i'm already in, will get affected that i could even force reload them. then, if i close the yahoo mail, it will go back to a normal browsing with safari. if i check my email on gmail, there was no problem, i could continue browsing with other website. i haven't experience this before upgrading to os x lion. please can somebody help me? are there any tweaks that needs to be done that i don't know.. please help. thank you so much.