I log onto Siege Perilous to do my usual lockpick run around Skara Brae to find the elusive semi-rare whips.  My r33t mule skills usually allow to pick and disarm the barrels & chests with ease.
This morning I run into two barrels that I can't seem to disarm.  I wasn't playing much attention when a barrel popped in my face.  No worry I think I have 100 STR.  Then I see the poison message.  Level 5 poison?  WTF?  When did these barrels get level 5 poison?  I've been disarming them for weeks and never had this problem.  I res and go back to get the last barrel.  Level 5 poison again.  What a pain in the ass.