"...you'll have to be more specific"
It was quite strange. Rather then getting signed-in, I was presented with a page I've never seen before advising me that my password was incorrect (I use the Roboform password program to automatically log-in) and required re-submission. Several sign-in attempts (manual as well as Roboform) elicited the same failure. I had to utilize the forgotten password process in order to log-in successfully.
No idea what transpired here but I guess it must have been somehow self-induced. I certainly never intentionally changed my original password (known only to myself) that I've been utilizing for years...but the server simply wouldn't recognize it anymore.
Somehow my password got changed...and I'm thinking it may be time for some anti-virus investigation.