As the title says, when I boot my machine, the LanmanServer service gets stuck during startup. While this is happening, the OS is basically dead, and any attempt to do anything that involves loading from the HDD will lock up until the service finally starts, which can take upwards of ten minutes. This started around the time I set up a homegroup for all our PC's [all Win7-64 Home Premium], and mine seems to be the only one affected. But this was also the time SP1 came out, so I can't nail an exact cause-effect relationship, making this hard to debug... After doing a LOT of searching, I modified the registry entry to ensure the LanmanServer service starts before the Spooler service [vista unresponsive at startup - lanmanserver - Vista Forums], but that had no effect. Based on what I've seen via the Event Viewer, it looks like the LanmanServer service tries to start, times out, tries to start again, does this a few times, then finally starts up properly. Can anyone help me track down why this is happening and stop it?