Recompile problem

[Mathieu Isabel]

I have a problem with ASP.Net 2.0 application that works fine for a while,
then the application needs to recompile at every access to a page. I first
noticed it by the application having a slow response time, then I did some
basic monitoring and noticed that the w3wp and csc.exe processes used most of
the cpu while the recompile occurs, which seems to make sense. I'm not too
sure how to troubleshoot that issue and I would like some tips on how to get
to the bottom of that problem. Also, doing an iisreset bring back the
expected response time until a day or so later where the problem reappears.

Thanks!