Recently everytime I reboot. All the entries in the stored user name and passwords applet disappear.
Control panel > User Accounts > "my account name" > Manage my network passwords.
I've been accumulating entries for a long time as I'm a sys admin and work with machines on two domains. This problem seems to have occurred after the last round of MS updates.
I've added entries since this problem started and after a reboot, they are gone.