Hello, I have a strange issue with new PC with Vista I've installed Trend Micro Office scan 8.0 (patched 1.1). If my computers are on 1GB network they work fine, if not (100MB) they hang with blue screen usually a few sec after logon. If I just connect the machine to a 100mb switch alone, no blue screen, if it can reach the logon server -> blue screen. Any idea ? NH

Hi Nicolas, Please understand that Microsoft provides different support services which have different service levels and support boundaries. For blue screen crash and system hang issues, it is necessary to debug the related crash dump files or the freezing systems to locate the root cause. Also, in most cases, it is necessary to check the source codes as well. Unfortunately, debugging is beyond what we can do in the forum. A support call to our product service team is needed for the debugging service. I'd like to recommend that you contact Microsoft Customer Support Service (CSS) for assistance so that this issue can be resolved efficiently. To obtain the phone numbers for specific technology request please visit the website listed below: http://support.microsoft.com/default.aspx?scid=fh;EN-US;PHONENUMBERS When calling Microsoft CSS, the following are some basic steps and I hope they are helpful: 1. Please confirm if the NIC is compatible with Vista, and update the latest driver for it. 2. Please restart the Vista machine and log into Safe Mode with networking.If the issue doesnt occur, please perform a clean boot and go back to Normal Mode. In this way, you can narrow the issue down to a particular service. 3. If the issue is related to Trend Micro, please update the latest version. If the issue persists after performing above steps, I suggest contacting our CSS directly. Thank you for your cooperation and understanding. Sincerely, Joson Zhou Microsoft Online Community Support