i have ubuntu on my internal server for Moodle 1.7,
all PCs are in windows XP and connected through a switch, there is no internet connection nor router, each PC has its static IP, all PCs can see the server which also have a static IP that we put in browsers to open this Moodle,
during exams after about 30 minutes when users save or submit their answers some PCs got the messages "connection time out - takes long time to respond" and some we found it logged out the users
after refreshing it comes back but all data are lost( answers)
Moodle was installed to make users password expire after 1 hour
is it from Ubunto network configuration, Moodle, networking our PCs? and how to get rid of this?
thanks in advance