every time you resubmit you are sent to the back of the que, it can take a long time to get into dmoz, sometimes longer than a year, give it 6months and if your still not in
http://resource-zone.com/ go there and asking bout your site, and yes it is worth it as your site will get crawled more as most search engines especially google start at dmoz and crawl all its links, and you will also have your links in a load of other directories that use dmoz content so you will gain many back links