http://img6.imageshack.us/img6/939/spiral20130508190059.png
It's still happening. Apparently your presence will not displace this slag, it displaces you?
Also I've never seen this in BN except on May 3rd it happened all the time. (just in BN)
http://img401.imageshack.us/img401/7811/spiral20130503143944.png
IDK if this is a known bug but it is known by many Knights...
You can skip the last wave of the last room in SL FSC at depth 27... the first time I did SL FSC one of my friend (who were our *guide*) did it to us and was like "this is just insurance policy in case you all died, it wouldn't have cost any ce!" >.< dat troll!
And like you did...
This is because Slags aren't affected by players or items location, if you put 10 vials on the ground where trojans should pop (in normal FSC) they will pop elsewhere (normally the closest area they *can* spawn). But Slags doesn't...
And if this bug wasn't known then it's time it was showed up, it exist since the SL FSC exist >.<