Flash app disconnects from FMS after an hour

Question

I have developed a Flash chat for a client using FMS2. The
application is used by goups of 5-15 people, who will use it for up
to 2 or 3 hours in one session, sometimes even longer.
Many of our users are complaining that they consistently get
disconnected after about an hour. They can usually log back in
immediately. Are there any known issues with connections being
lost?
A second problem I'm facing is that periodically my entire
interface(AS2, SWF7) stops interacting properly. No user
input(click actions, text input) is received, and several animation
scripts stop updating. However, the application is still connected
and new messages are received. Again, users report this behavior
consistently after an hour. I know that is an extremely ambiguous
problem, but I've been going crazy trying to isolate the problem,
if anyone has even a guess, I'm all ears.
A few facts about the chat:
- It uses a persistent RSO to store chat history
- Chat messages are sent from client to server, and processed
by server and put in the chat RSO
- User listing and info is in an RSO, which is created by
ther server and modified by the clients. It is modified frequently
by all clients when they type, setting a "isTyping" flag to be
rendered by their name on each clients user list window
- I'm using a complex custom message renderer, which includes
emoticon support and dynamic attach/removal of message clips when
scrolled(to prevent application slow down as the chat history gets
long).
- Our users I believe are are using somewhat older computer
equipment, and are fairly minimal in computer literacy/experience.
Any help would appreciated.

Answer 1

I solved my interface problem. Long story short I
accidentally had an endless loop in teh suers RSO that was causing
focus to be constantly stolen and placed on a certain textfield.
However, I'd still be interested to know if there are any
problems with connections dying after an hour, or any amount of
time.