I don't understand the issue with "linked list" and I don't understand you're solution to it (you didn't provide enough detail). If I have three files F1, F2, F3 (A = add, D = delete) F1 contains: A1, A2 F2 contains: D1, D2, A3, A4 F3 contains: D3, D4 The current algorithm should delete all files. Are you saying it is not? View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4208695#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...