I think it was this last summer. I was having a similar problem on two separate computers using a multitude of ISP's (I travel) all over the country. IB's programer, through DAVE, had me send some log files.Quote from Bearbelly:
Do any of you guys know if TWS software itself can cause connection problems? After a couple of years with no interruptions the last couple of months I have been getting short disconnects on my dsl and I cannot find the problem. I wouldn't think that software could cause a disconnect but I dont know for sure. My dsl light stays on during these disconnects and bells says that means their end is still up. It is bugging the s**t out of me. I have removed the router and anything else I could think of but it still does it.