AJAX Tabpanel - Runs slow on IE 7.0 but very fast on FireFox?

Folks,

I am using AJAX.net TabContainer control with 5 tabpanels in it. Each tabpanel has an update panel [update mode is "conditional"] and inside the update panel, I have a gridview control [Editable]. Now, I also have a "Save" button in each of the update panels, that will save the data I enter in the "GridView". The idea is, to update only the "current tab" when I click on "Save"

The problem is that, the code runs very fast on FireFox [meaning, the update is almost instantaneous]. However, on IE7, the update takes thrice as much time as the "FireFox". I think the Javascript runs slow on IE7

Any help or thoughts?

-Thanks

Any one from the AJAX Team?

ive experienced the same thing..very slow for IE rendering..3-4 second pause before the page renders to the screen versus FireFox which just pops up the content without a delay.

I also had the same problem. Actually i had two TabContainers on one page and i not checked firefox but it was very slow in IE and for that reason i removed tabcontainer from my code. Any reason for it being slow and any help in making it fast would be appriciated. Thanks.
Same here. I had to load several text areas into about 9 tabs. This text was really slagging IE. I ended up using a dropdownlist to choose which tabpanel to make visible instead of loading them all at once.

Hehehe... back in the bad old days before AJAX, I made tab-panels from the wizard control with some CSS work. Then when the AJAX extensions came along, I just droped the wizard into an update panel, and it worked great... 10 second job. Then I started converting these to the TabContainer / TabPanel when the AjaxControlToolkit came out. I have pretty much learned that I wasted my time because of the perfomance issues... it is "faster" on FireFox, but still has poor performance. Thank god for backups.

I have a similar sitiuation. I have 4 tabpanels, one tab has a selectable gridview and associated formview wrapped in an update panel. The other three tabs contain editable gridviews wrapped in update panels. One of three gridviews has two dropdownlists as columns with 8000+ selections. When I click on edit on a row using IE the row enters edit mode in around 4 seconds. If I then click on update or cancel it takes over 2 minutes to repaint; using Firefox it repaints in 5 seconds.

If I get rid of the update panels all is well in IE. If I leave the update panels and replace the dropdownlists with textboxes all is well in IE. Big dropdowns in updatepanel wrapped gridview columns seems to be a problem in IE. Firefox handles fine.

Any ideas??? I've Googled and tried things for two days to no avail?