I have a mapped drive which frequently drops when resume from sleep mode. The only thing unusual about the mapping is that connect using a different user id to the one that I'm logged in as (and yes I did choose to save these credentials when I set up the share).
I also have use a share from another machine on the network and don't have this problem, but then the user credentials for that share are the same as my Windows 7 login.
Both of the shares are on Windows XP machines. I'm running Windows 7 Ultimate on the machine that I'm having problems with.
Does anyone have any ideas??