Re: Internet suddenly got very very slow
Is this something that is temporary, or on going? Microwave ovens emit signals in the 2.4GHz, so be aware of you're environment if it's intermittent. Also, secure your wireless, or other people nearby can piggyback on your bandwidth. If it has been ongoing, you might just try restarting the router.
Check also that it's the Internet connection that is slow, not your system altogether (which could be virus related as suggested by 2xgrump), or a browser issue.