Quote from kowboy:
Bond speculator,
Some years ago I had a similar problem with another trading platform. Every other program worked fine(charts and two other brokers), but the platform would disconnect intermittently or be out for longer times. When disconnects occurred I would talk to the Isp and the broker repeatedly. Everything supposedly always looked fine from their end.
Turned out the problem was a router on the fiber backbone that the Isp leased, which was about 150 miles from my home. This particular router was storing data and then data bursting and causing the front end of the platform to disconnect. At least that's what I was told.
May not be your specific problem, but things can happen.