i'm just GlaD, OStensibly this means something wicked this way comes

Shacknews - Portal Patch Adds Morse Code, Achievement - Portal 2 Speculation Begins:

Interior transmission active
External data line active
Message digest active
The quick brown fox jumps over the lazy dog
System data dump active
User back up active
Password back up active
Beep beep beep beep lol

(Thanks to AndrewV for the heads-up.)