My IE8 has slowed to a crawl using XP it takes forever to download websites and the computer seems to hang for long periods, freezing the mouse pointer. Chrome and Firefox are quick which would seem to suggest this is not a cpu, memory or hard disk related problem. The fault seems to lie with IE8 browser. I have disabled 'add ons' so not that. Should I reset it (but it warns only to do this if unstable} or should I undelete and re-install IE8?