ClassLoader leaks usually result in java.lang.OutOfMemoryError: PermGen. In the instance of working on application servers you may see this as a result of
Yes, there are easier - and more proper - ways to resolve the leaks. Add the ClassLoader Leak Prevention library to your project, and it should take care of the problem for you!
In case you want to track down the leaks yourself, this blog series will be of help.