problem with large data

Hi

I created a grid
the row height is 20px
now when i fetch data >1000 rows
i get a script error saying

"the scrupt on this page is causing the IE to run slowly,if it continues to run your computer may become unresponsive

do you wish to abort the script"

inputing 'no' does display the content perfectly
but is there a way to avoid this?
according to what i have read the grid supports 19px 55555 rows
pls comment

Remove setVirtualMode(false) - the virtual mode should be on for large datasets.

Hi Alex

I tried as u instructed
Put setVirtualMode(true);

i still get
script error

"the scrupt on this page is causing the IE to run slowly,if it continues to run your computer may become unresponsive

do you wish to abort the script"

im using setCellText() to place data in a specified row column,running in a loop

is there anything i might be doing wrong?