I have three E Series notebooks (E4300/E6400/E6500).  All three exhibit the following behavior:

When docked, everything runs fine.  If I "hot" undock (all running 32-bit XP Pro) everything works fine.  If I then "hot" dock, everything seems to come back fine, but the mouse starts pausing for 1-2 seconds out of every 10 seconds.  If I then put the machine into standby (in the dock) and then resume, everything works fine again.

What is going on with my mouse?  I have the latest Dell Alps TouchPad mouse driver installed, and have tried various settings to get it to resolve with no luck...