Has anybody seen this process hang onto a thumbdrive? I had a thumbdrive plugged into my laptop and wanted to remove it. AFAIK only SW had accessed files on the drive. I closed all the files in SW and any Explorer windows and couldn't dismount the drive. Then I shut down SW2005 and still couldn't shut down the drive. Finally I went into task manager and checked for errant SW processes. There weren't any, but there was the SWBOengine. I shut that down and the thumbdrive could be shut down. So what is SWBOengine doing? And why does it maintain some kind of handle on my files?