I've set up Link Management Assistant directory on 2 of my sites in August 2005 and I have a real problem getting those pages indexed. You2UK directory got picked up by Yahoo but I decided to change default names of the pages. Now the old pages are cashed (when you click on the search results link you just arrive at blank page) but the new ones are not getting indexed at all. You2USA directory is nowhere to be seen apart from the home directory page. Any suggestions would be appreciated.
Do you have some incoming links from sites with PR? Was the site ever banned by a search engine before? I have quite a few LMA directories, I haven't had too much trouble getting them indexed. Maybe try creating a google sitemap and submit it. I'd also use Xenu and create a 1 page sitemap with each page on it. That seems to help things along as well. Good luck.
After months of struggle I managed to discover the problem. I had listings on my subcategory pages but no listings on my category pages. Once I've changed that Google indexed every single page of my directory within 24 hours.