I'm sorry you're having trouble with your chat script for your site. We recommend, since you are in a shared hosting environment that you integrate a chat feature by using a third-party hosted chat application (not installed on your Web Hosting Hub account). Chat programs are resource intensive and normally do not well in a shared environment.
I did some research online for "hosted chat application" and came up with many results, here are just a couple I found, feel free to research this more and find the right one for you:
Google Talk chatback
If you have any additional questions or need further assistance, please do not hesitate to contact us.
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