Lenovo, you found the SharePoint forums on MSDN to be dead? Those forums are extremely active and heavily monitored by both MSFT employees and MVPs + community contributors. At the same time, InfoPathDev is the premier place for InfoPath answers, but not so much for SharePoint Designer questions. I recommend using the MSDN SharePoint Workflow forum (pre-2010) or the SharePoint Designer 2010 forum (2010 only). I answer in both forums just about daily, but I spend more time in the 2010 area. You can always contact me directly as well.
Anyway, Hilary contacted me to see if I could help, but it looks like you "fixed" it with a reboot? That really should not be the "fix," so I would be pretty nervous about considering it a closed issue, because it may happen again.