I say it's not your pc because my old c2d with 4gb ram and x1550 never slows with 30+ tabs. I know the browser grand prix shows them similar but for me ie is much slower. Is there a reason you won't try another browser?
Company owners like what they like... my job is to make sure it performs. but given that recent tests show browsers to be pretty similar in speed, with Firefox and Chrome at top of list, havnt been giving the browser issue a lot of weight. but thanks for the input