maybe it is Attachment 1.4 extension's problem

edited August 2006 in Vanilla 1.0 Help
I have installed attachment 1.4 extension,when I submited a comment in IE,the discussion would display two repeated comments!but the discussion display one comment after I submited a comment in Firefox.After I have uninstalled the attachment extension,it is normally in both IE and Firefox. How can I solve this problem?
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