I just want to confirm that I have made the experiences with slow speed on selecting rows. The problem could be solved with the given workaroud.

Here are some others having the same problem:

http://stackoverflow.com/questions/3883328/jqgrid-multiselect-is-very-slow-with-large-local-data-and-jqueryui-1-8-jqueryui

There is also an example given, which demonstrates the behaviour. Works fine with IE6, but seems to be very slow FF>3.6 (not tested any lower version).

Oleg,

Thank you very much again.

Such kind of bug descriptions and examples are much apreciated.

If we know the problem we solve it to 50%

Will see how to overcome this.