Problems on deployed server

We have a problem showing pages which include the Web.Maps.VE 2.0 object on servers where our solution is deployed.

 

On my developmentmachine all works fine. But we get the following error on deployed servers:

 

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Microsoft Internet Explorer
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Internet Explorer cannot open the Internet site http://localhost/Servicetelefonen/map.aspx.

 

Operation aborted

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OK  
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Is this a known issue? Where may I begin to trace this error?

 

Thanks in advance!

 

Best regards

Thomas

Some more information...

 

All apsx-pages in our solution uses the same masterpager. Only the ones containing a map-object fails. And they're failing on both IE6 and IE7.

 

But these pages are shown in FireFox. But the tooltip-information won't show as expected..

 

-Thomas

Ok. Some more information...

 

IE7 now works. Some access-restrictions fixed that problem. Strangely enough it still persist in IE6..

 

When using a "clean" masterpage the pages work in IE6. But when I add a menu-component (Infragistics) it fails with the above mentioned error. So I have implemented a workaround which involves a empty masterpage and iframe's.. Ouch!

 

And I have found out that the problem with tooltips in Firefox is that the tooltip is shown behind the map. Is there anyway that I might set the zindex for the tooltip?