On some Windows systems, the network device/driver can cause -9093 errors while using Pro Tools LE with small (128 or 256) H/W buffer sizes. One workaround is obviously to raise the H/W buffer size to 512 or 1024, but this results in larger (and undesirable) input-to-output latencies in Pro Tools. There are a few workarounds that allow H/W buffers of 128 to work on most systems. (Both involve temporarily disabling your network device.) Option 1: Manually Disable the Network Device in your (default) Hardware Profile.Go to the Windows Control Panel and open the "System" applet. On the "Device Manager" tab, expand the "Network adapters" item, and then double click on the icon for your network device. A properties dialog will open. On the "General" tab you'll see a checkbox for "Disable in this hardware profile." Check this box and close all the dialogs. You shouldn't need to reboot -- your network device has now been disabled and Pro Tools LE should perform better with small H/W buffer sizes. To re-enable your Network Device, go back to the Device Manager and uncheck the "Disable in this hardware profile" checkbox. Option 2: Create a New Hardware Profile with your Network Device Disabled.An alternative to manually enabling/disabling the Network Device in the Device Manager (option 1 above) is to create a new Hardware Profile and disable the Network Device in that profile. This option is a bit cleaner/simpler, but does require you to reboot Windows when switching between Profiles. To create a new profile, go to the Windows Control Panel and open the "System" applet. On the "Hardware Profiles" tab select the "Original Configuration" profile (or whatever profile you typically use) and click the "Copy..." button. Name the new Profile "Pro Tools LE" or something similar and press OK. Click OK to close the System Control Applet, and then reboot Windows. Each time you reboot, you'll be given the option to select which Hardware Profile you'd like to use. Select the "Pro Tools LE" profile you just created, and when Windows is fully booted follow the steps in Option 1 (above) to disable the Network Device in your current profile. From now on, whenever you boot Windows using the "Pro Tools LE" hardware profile the Network Device will automatically be disabled. If you boot Windows using the "Original Configuration" Profile, your Network Device will be enabled.