[Plugin: NextGEN Gallery] slideshow and htaccess problem

well i noticed a problem in slideshow(imagerotator)
I use htaccess rewrite rule to disable hotlinking of my images and files. so in this case the rule also applies to my gallery folder and when i browse the blog with firefox 3 i could see that slideshow keep sending the request but it get directed to link i set in htaccess(I used Firebug add-on in firefox to trace the request and response). the strange thing is that this problem not happening in IE 7.
for the time being i removed the rewrite rule in my htaccess, and it solved the problem but i think it’s better to report it here and see if you can let me know of a work around this. Thanks.