I got a chance to speak with Scott Johnson, Vp of Client Services for Interactive Data (eSignal) at the NY Traders Expo. He is aware of the issues with V10 and they are working on it.

The problem I am having is that once or twice a day winsig, the esignal process begins gobbling up RAM to the point where it will stop running. I have had an eSignal memory error that said, "eSignal-Out of memory!"

I only have about 30 symbols open. Scott had said that he has customers using over 240 so the number of symbols is not my problem. If you bring up Windows Task Manager (ctrl-alt-del) and go into processes and look for "Winsig" you can see how much memory it is using. Under performance you can see how much memory is being used and how much is available. When my memory available gets down to 300,000k I am apt to see the memory error. I can forestall it by closing other applications to free up memory in the short term. I think in the software programming world this is called a "memory leak" where the application addresses memory space for a given task and instead of giving it back when done with the task it keeps the memory addressed. So the next task has to address additional memory instead of using memory that was supposed to have been given back as available. As this is a problem that develops over time my short term fix is to close eSignal when I go to Lunch and reopen it when I get back. I can usually get through the day without a problem. Also the more other applications you have open the more memory is being used and the problem will manifest itself quicker. Close whatever you are not using and be aware that anti virus software uses quite a bit memory.