Lordaeron Quest giver NPCs missing in Northrend. Can't quest anymore.

[gregg9]

I am stuck on level 79 as both my Icecrown and Storm Peak quest chain are completely blocked by missing NPCs.

1. Siegemaster Fezzik in Argent Vanguard for quest ''A Cold Front Approaches''
2. Brijana near Brunnhildar Village for quest ''Going Bearback''

I can see them for half a second when I log on but after theyre gone for ever. It is really annoying since I just can't quest anymore!

Please help I want to get to level 80!

[deliorax]

Same happened to me with Siegemaster Fezzik, and after a few failed attempts, I went in to the empty hut where he's supposed to be so I can be as close as possible to him when i relog, and I managed to turn in the prevous and accept the next quest by quickly clicking on him as soon as I relogged before he disappeared again. That was the only way I could do it. But even though I did it, the next quest is also bugged so...