strange error

My webform is working properly for an hour or so.. then suddenly it stops working. No matter what I put inside Page_Load(), Response.Redirect("hhsjdh.aspx"); for example, it doesn´t redirect or seem to care what I type.

I don´t get any errors or so, but empty tables since the mysql data is not fetched.

I have cleaned the cache and tried three different browsers. I rebuild the solution everytime I make a change in a code behind file.

I use sessions and mysql odbc driver 3.51 if that helps.Does the web server you posting to have a proxy server? Even some hardware firewalls come with proxy servers now. If so, it may have chached your page and you will need to clear the server's cache.
restart your IIS may help. type this in command line widow: iisreset /restart. It is possible that your IIS does not work properly.