I am a Linux newbie  and I have been running e-smith manager  beta v4.0 for a few months with no problem except for now. 
The problem is: Lately (3 weeks) I have to  reboot my machine up to several  times to sustain a connection. The first few times I can access web pages, but after a few minutes I cannot connect to the same pages. Each time,  I cannot access web pages, I access the “control console”  on the gateway and  run “Test Internet access” – The test failed !
I have spoke to support at Videotron . They do not officially support Linux. But  since the signal from videotron was “strong”  he suggested that it might be a configuration issue with Linux. 
My configuration is below. Can anyone help me please?
Configuration:
I am using beta version 4 of e-smith server and gateway. It is setup as a gateway, connected  to Videtron with a “Motorola Cyber Surf” wave cablemodem.  The networked machines are Win95 & WIN98. I shutdown the gateway when not using it.
Ethernet settings:
Ethernet Driver 1      : 3c59x
   Ethernet Driver 1      : 3c59x
   Ethernet assignment : normal
External network settings
   Operation mode : server and gateway – dedicated
   DHCP Client      : enabled (send system name as client id)
   Dynamic DNS    : do not use dynamic DNS service
Local network settings
   Local IP address  : 192.168.1.1
   Local subnet mask: 255.255.255.0
   DHCP server         : disabled
Miscellaneous settings
   Primary DNS server     : 205.151.222.250
   Secondary DNS server     : 205.151.222.251
   External Proxy : No