Extremely Slow on Internet Explorer 8

Hi,
I am experiencing extreme slowdown of my flash site after about 1 minute of use. My site makes heavy use of actionscript and javascript, and utilizes many calls to ExternalInterface to allow the two to communicate. The javascript is using yahoo YUI to make asyncronous requests to my server quite frequently. From my debugging I have found that the slowdown occurs in all parts of the asyncronous request, from the get to the processing. In IE8, after about the first minute of use, it takes over a minute for a small request to complete (blocking everything else, including flash), and goes up from there, making the site completely unusable.
The site runs fine for long periods of time in Firefox and Chrome without any slowdown. If I remove flash from the page then IE8 runs fine.
Has anyone else experienced a similar problem and able to come to a solution?
Thanks for any help.

Hello Crotty,
Well I won't arrest you.... Promise!
If the internet is slow on only one of the three accounts - Delete that account and try a new one.
If the internet is slow across all three - It could be one of several things ( IMHO )
Amount of free hard drive space.
Lack of maintenance on the computer.
Settings in system preferences.
Did the thing go slow after setting up a new account?
Hope at least some of that helps!
Regards
Ian

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