This addon has many issues, but they usually realted to servers, not the script.
Basically, this addon is not easy to add and it may not work on all types of servers.
- You need to have access to newsgroup server provided by your webhost and not all webhosts have it.
- Even if you have newsgroup access provided by your ISP, ISP may have it setup in such way that it will not work from outside their network, meaning that if you can access newsgroups from home, you may not be able to use the same account to access from your webserver.
- Even if you have access to news server, your host's news server (or any news server for that matter) may not have the access to newsgroup that you interested in.
- You need to make sure that TCP port 119 is open on your server
- You may need to compile the php with imap support, as stated by Gilby in one of these posts.
- In order to complie php with imap, you also need to install imap c-client library on the server first. From here:
ftp://ftp.cac.washington.edu/imap/
Warning

a big pain to install)
- If you need to install imap c-client libraries, you need to be sure that imapd is running of your server. If it's not running, you may need to add imapd to your /etc/services file and kill -HUP inetd
As you can see, a lot of things must go right before this addon will work.
Some people lucky and have all of these things already setup on the server, but some are not.
I know, I'be been though all these steps and finally got this thing to work.
The addon itself is a pretty much complete version, not beta, it's just it's a lot more difficult to get it to work than most other add-ons.