Why has my website started running slower after I installed Windows XP patch SP1?

We had this problem at the Gurus Network and it appears that the code we were using to automatically detect if someone was using Microsoft's instant messenger (MSN Messenger pre-XP and Windows Messenger in XP) was causing a moderate slowdown for some users but was making the site virtually unusable for people who had installed the Windows XP SP1 patch (removing the patch made the problem go away).

It is code like this that was causing trouble:

quote:

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<!-- START MSN MESSENGER SCRIPTS //-->
<object classid="clsid:F3A614DC-ABE0-11d2-A441-00C04F795683" codebase="#Version=2,0,0,83" codetype="application/x-oleobject" id="MsgrObj" width="0" height="0"></object>
<OBJECT classid="clsid:FB7199AB-79BF-11d2-8D94-0000F875C541" codeType="application/x-oleobject" id="MsgrApp" width="0" height="0"></OBJECT>
<!-- END MSN MESSENGER SCRIPTS //-->

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The irony of Microsoft's patch conflicting with Microsoft's instant messenger is not lost on us

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Relevant links:

sloooowwwww

Put Messenger Contacts on Your Site - a tutorial showing the uses of the Messenger API that caused all the trouble.

____________________
Emperor

(Added by: Emperor on Thu 09-Jan-2003)

(Edited by: Emperor on Thu 09-Jan-2003)