We were having a problem performance tuning an application. The reason, it seemed pretty quick.

It was a heavy Ajax app with YUI. But it loaded in under a second, and was nice. Refreshing the datatable with a hundred rows took 2 seconds. We worked on that took it to 0.4 seconds. The bug however remained on the bug tracker.

The solution (by way of finding the problem) was performance in IE. The solution, found by a colleague, was to specify the widths of the columns in the datatable.

Joel