If you're one of the zillions of people who've downloaded our DIO24 KMDF sample driver for the SeaLevel Systems DIO24 board (see the board in the OSR Online store), you might be interested in the latest update.
The latest update of this driver adds cancel handling (in case you try to remove the driver while it's waiting for an interrupt). We agree that it's not real likely that this will happen, but we felt guilty (prompted by a well known member of the KMDF development team), so we added the logic.
While we were at it we also did a bit of cleanup, including updating the INF and SOURCES files to work in the WDK in addition to the Windows Server 2003 SP1 DDK.
You can download the latest driver ZIP archive from here on OSR Online.