WP-SuperCache not caching

Hello,

Sometime last week I noticed that my SuperCache was no longer caching pages. I don’t know whether it was because I updated to 2.5 or whether it was because I updated the super cache plug-in. Whatever it was it is no longer working.

I have looked through some of the help guides on here but I can either not do what they are saying or they are not related to my problem.

Has this problem happened to anyone else, and if so what did you do to solve it?