this tool can help us to detect the code , dll , cs and etc file have any possible memory leak coding use or not, since majority administrator and engineer not really have developer skill so we need to make sure the customization going to deploy to our sharepoint environment is safe and will not impacted our environment performance.
Download here > http://code.msdn.microsoft.com/SPDisposeCheck
more explain here > http://jomit.blogspot.com/2009/01/disposing-sharepoint-2007-and-wss-30.html
how to use?
after install then go to the .exe path and run the command as below :
C:\Program Files\Microsoft\SharePoint Dispose Check>SPDisposeCheck.exe xxx.dll
Ok you will see the report.