Multiple (PC) backups Stopped working - "password" ??

Hi...,

I have SE running on 3 PC's (2 XP-SP3 and 1 Win 7) Automatic (scheduled) BU's on all 3. All (were) working fine for couple weeks – (as I set up each computer) to a NAS. There has been NO (known) changes of any kind – all were working fine on a daily basis at the (their) scheduled time(s) ...

Suddenly the WIN 7 and 1 XP BU's Failed due to "network failure" due to incorrect password etc. The Win 7 has no password for the user (and I did go through the process when I set up the scheduled BU to change the password requirement for Win 7-(and it WAS working) - and the XP was working (as I had provided the user name and password) Note that the 2nd. XP PC is still working. (Which has no password for the user on this PC)

ANY ideas? (like I mentioned - all were working great for several days (1 ½ week)….. Schedule(s) are waking up the PC’s - running the BU successfully etc.) Then (with no changes) - 2 (different PC's/OS's/profiles) are failing.........

Thanks for any input/thoughts..

???