I know this is an old issue, but I wanted to make it just look more worse and clear, also updated.
I am using Tomcat 5.2 and am still suffering from this problem. I also tried searching the whole net for a solution, but found nothing but problems. And about restarting the server, let me make it worse... I restarted the whole PC and it still didnt work!. Its one of the very rare times where restarting Windows does not payoff any good! I tried deleting files, copy and paste from another folder and still suffering from this.
If anyone by any chance has the solution, please let him tell me.