Not sure if this is due to IB TWS, but my HP laptop tends to slow down to a crawl right at the open for a few minutes, then it goes back to normal. The strange thing is, when I bring up the Windows Task Manager and look at the processes using up CPU cycles, it's mostly on "System Idle" and sometimes 50% on stocks.exe (which I assume is IB). I'm also running a couple of excel files, but I show no CPU usage during those critical minutes. Is anyone else experiencing this? I'm using a 3-month old laptop with a 1.83MHz Core Duo and 2GB RAM, so it's fairly high end. Granted I'm running it on XP, but if anything it should be even more stable. I'm running IB version 873.3 on Java 1.6. I ran a virus and spyware check and came up with nothing. And when I say a crawl, I'm talking about the computer takes 5 seconds to respond to every mouseclick and keyboard action. For you daytraders out there you know how much that can drive you crazy, especially at the open. Help!!!!