Clip screen says remains "connected" after unplugging from laptop USB...every time

Don’t know what I did to mess this up, but everytime now that I disconnect from my laptop the Clip remains with “connected” on its screen…no refreshing database etc.  So I hold the power switch for 15 seconds and it powers down.  Then I turn it back on and it refreshes the database.  Laborious.  Also often (always?) doesn’t seem to automatically power up with I plug the Clip into USB laptop port.  Have to connect via USB port then manually turn on the Clip.

Any ideas?  Tried a firmware re-install (version 2.016a or some-such) on this month-old 4GB clip, and even a re-format.  I appear to be in MSC mode.