Connection to server fails after waking from sleep I connect to my Windows computer with my MBP using Connect to Server (using smb://192.x.x.x).

For a reason I can't explain, it works well when I do it but if I close my laptop (meaning closing the screen, not turning power off) and reopen it, almost 90% of the time, I won't be able to access the remote computer.

The only way to solve the problem and be able to reconnect is to reboot the macbook.  I use Snow Leopard.

Does anyone know a fix for this ?

Update: I forgot to say I see I'm still connected but I can't 'eject' the mount.  I just does nothing.
Sometimes a network device may stay "connected" even though the connection isn't working properly. Try manually ejecting it from the Finder sidebar, if it appears there:



Then try connecting again with ⇧⌘K.

If that doesn't work, this question on Super User suggests some more possible solutions.