Warning: Unresponsive script

Since WWW.bbc.co.uk has changed the layout of its webpage ,i get the page 
taking ages to load and a firefox warning box that says
"A script on this page may be busy or it may have stopped responding.You 
can stop the script now or you can continue to see if the script
completes"
If i then click stop script the page loads.This doesnt seem to happen with

IE 6 ( i guess because i have "disable script debugging) ticked.How can i 
do the same in firefox and stop the annoying delay opening the webpage?
tia
me
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