Where did the Wurdalak go?

Details: There should be 5 Wurdalak in Bostaunieux Oubliette. 3 in the large room (Hounds) at J/K-7 and 2 in the smaller room (Bats). Since shortly I started trying to learn Bloodrake on BLU there has been only 1 Wurdalak in the large room and none in the smaller room. When I first went down there, there were 3 in the large room and only 1 in the smaller room.

This is not a respawn timer issue as I have spent 4-5 Hours in there at a time with no respawns of the missing Wurdalak.

Aside: Should I post a new thread asking why in the 100+ TP moves used by the sole remaining Wurdalak, Bloodrake has never been used or can I just add that here?


Steps:
1. Go to Bostaunieux Oubliette
2. Go to the rooms that should have Wurdalak
3. Find only 20% of the Wurdalak present

Date & Time: 02 Dec 2013 - Present
Frequency: Constantly from 02 Dec 2013 - Present
Platform: PC
PC Manufacturer & Model Number: Manufacturer: Me Model Number.. 30 or so
OS: Windows 7 Pro 64-bit
Graphics Card: ATI Radeon 5850
ISP:
Type of Internet Connection: