Classic ASP's Application Variables disappearing

I've got a classical ASP website in which I store some information inside the Application object. These variables seems to disappear every now and then. I am won开发者_StackOverflowdering what could be wrong. Any ideas?

The application probably got restarted in the meantime, and their is now way to prevent that, you should probably check your web application lifecycle. what version of IIS are you running ?