I had cometchat running for about 6 months. I started receiving complaints that the forum suddenly was very slow and that the chatting experience, overall, was awful because messages not being received or they took long to get to the user, sometimes they did not even get to the user at all! At the end, users ended up chatting in msn...
There were too many complaints so I had no choice to remove it. I tested around 20 chat solutions and ended up with a Java solution. That last one works perfectly!
In addition, technical support was non-existent. I had to wait months for a simply answer to a question... never really got a satisfactory answer...
That being said, I have to be fair in my comments: I was running on a shared host with hostgator and my experience dates to last year. Maybe they stepped up and the product and support is worth a second try this time around.
As per arrowchat, I’ve heard it is a better product with better coding skills but I have no experience with it., so i dunno....