Did I get hacked or is this a glitch?

The same happened to me. I logged in today and found all my stuff missing. Except in my case, my paladin and f/p were stripped to almost nothing. The only things not stolen were a few untradeables (unfortunately, my zhelm and cwk pendant were gone, but my clean lunchbox is still there). I'm really not sure when it happened because I haven't been on MS since the past Thursday or Friday. (I might have logged in for a brief moment on Sunday before sc, I don't remember.) Sigh...

Oh, I did try to log in yesterday around 1:30pm PST, after the server maintenance. But when I logged in I was stuck on the screen right after the pin input window, and just closed down MS because I thought it was just a huge lag like everyone was saying. Maybe it was during that time... =_=;

EDIT: I'm pretty sure it was some sort of keylogging or hack, because my key settings were changed a lot. I can tell that someone was playing on my character before taking everything because a) it wasn't default key settings, and b) I have the weirdest key settings to suit my taste, and the hacker completely changed it.

Your case is someone actually hacking your account I guess. What's different from the cases in the topic is that the items taken were really inconsistant; only taking certain items on certain characters and leaving the rest alone. Not enough was really taken to devastate the player.