jQuery AJAX在Firefox中很慢，在IE中很快

I'm using jQuery to post to an ASP .NET Web Service to implement a custom auto-complete function. The code works great, except it's slow in FireFox (can't get it to go faster than 1 second). IE is blazing fast - works great. I watch the post in Firefox using Firebug.I'm using jQuery to post to an ASP .NET Web Ser