Weird problem in IE

[Guillaume Jay]

On my dev computer, everything works perfectly.

On the production server, everything works perfectly, in Firefox.

In IE, i have some weird troubles :
- elmah stylesheet is not loaded
- I can't click on Details without having to re-authenticate (whereas
i'm already authenticated, and this does not happens when using
firefox))

I'm using Forms Authentication.
<authentication mode="Forms" >
<forms
loginUrl="~/login.aspx"
name="LaBoiteAuth"
cookieless="AutoDetect"
/>

I'm having the same kinds of problems (things working in firefox, not
in IE, with a silverlight file uploader. So, I'm 99.9% sure it's not
elmah related. But just in case, I'm trying here.

thanks,

Guillaume