I am currently unable to log in to the forums or the account management page with Internet Explorer 8. When I click on the Login button at the top right corner of the forums, what I get is this message (translated from Dutch).
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The XML-page could not be displayed.
Couldn't read the XML-input with layoutmodel XSL. Repair the error and then click on the refresh button, or try again later.
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Systemerror: -2146697208.
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The account management page does display the ordinary login page but the box to enter my password in is gone.

The version I use is 8.0.6001.18702, the Dutch localisation and neither the normal mode nor the compatibility mode work. I didn't experience this before but it seems that some XSL page attached to the login of battle.net seems to be broken for Internet Explorer.
To post this message, I used Firefox in stead.

Edit: Edited tag to show there is someone else with the same issue right below me that posted it while I was typing.

Could you please try clearing your browser cache and trying again? If the problem persists, I will pass it along for further investigation.

Thanks!

Daliniya