[Juk]

So there I was, trotting along when all of a sudden...

Your skill in Detection has increased!
Your skill in Detection has increased!
Your skill in Detection has increased!

"what the heck? I'm not doing anything"

So I stop, and it continues to click up, and up...

Your skill in Detection has increased!
Your skill in Detection has increased!
Your skill in Detection has increased!

"Sweet" I thought, "a bug that works for me for a change!"
Then, I realized how skill-ups can go very wrong.

Your skill in Detection has increased!
Your skill in Detection has increased!
STABSTABSTABSTAB
*I flail about like a drunken cheerleader*
STABSTABSTAB

'Do you wish to release?'

[Jacosta]

Sounds like you came across a mob or a player that was invisible. I've had that happen whenever I'm near an invised player/mob.