ASP.NET memory problem when changing culture

I have a strange problem with ASP.NET. Several sites on my web server run the exact same application. The application has a page that contains a Tab Container from the Ajax Control Toolkit which in itself contains a Calendar control.

If I set my culture in the web.config开发者_开发知识库 to be:

<globalization culture="en-GB" uiCulture="en-GB" />

Then everything works fine. However, by changing this to:

<globalization culture="en-US" uiCulture="en-US" />

When attempting to load the page I get an out of memory exception and w3wp.exe seems to use all available memory.

Does anyone know what could be causing this?

This was nothing to do with ASP.NET, it was a bug in a custom control that caused an infinite loop.