My customer has a small LAN
All machines are "the same" (same original image) and run Windows 7
They are connected to a switch, itself connected to a router
The router is connecte to an ADSL box to the ISP
Some of the machines (a couple of them) have intermittent network problem, accessing the Internet.
We tried to figure out why but failed.
We verify the customers employees saying by running an endless ping from their machines to a site on the Internet and indeed sometime it fails (timeout) for around 30 seconds then again okay
For info, pinging from the router to the internet is always OK
We are looking for suggestions of what to test/check
For info, there is no firewall on users machines
The entire network is wired.