When you log into another machine on your LAN, even when you choose "remember my credentials", you must reenter those credentials later such as after a restart. I am not convinced the "remember my credentials" box does anything at all; it seems to be a lame option.
This is annoying because neither the username nor the password, nor even the "remember my credentials" checkbox state are maintained and thus must be frequently retyped. This greatly interrupts flow.
This can also break programs that the user sets up to operate on remote files.
The user should instead be able to enter this info ONCE, check "remember my credentials" (this box already exists in the UI) and expect reasonable persistence.
It should be noted that this may seem to be a "security feature", because if one computer were swapped with a malicious computer, and login was attempted, the password could be stolen. However I must point out that it CAN be done securely in a number of ways using some sort of login session certificate rather than storing the password.
Microsoft CAN and SHOULD implement permanent login in a SECURE way.