I have been using Mentor products since last decade, so this is not a new licensing issue. I have DxDesigner and Modelsim on my machine and both have been running fine for years (bugs aside). However recently both have started to behave in a very strange way with regard to license checkout, or so I believe. When I first try to open either application, it takes approxiimately 5 minutes for them to start. Both have separate FlexID 9 dongles (node locked) and both behave in this strange fashion. I have reinstalled Modelsim (version 10.1) including the dongle driver, tried a different USB port for the dongle, selected a couple of system restore points, and nothing that I have tried seems to make any difference. I am running Win7 64-bit. Any ideas would be welcome.