It's only happened to me once, but it has happened to people in my linkshell on more than one occasion. The game will just crash when exiting or skipping a cutscene within the raid. This can happen on any of them but I find it's most common at the ogre. It does not happen every time.

Platform: Windows, windowed mode.
ISP: Sky
Type of Internet Connection: DSL
Internet Connection Speed: 8mbps
Date & Time: August 3rd 2011 around 4:20am BST.
Frequency: Rare
Character Name: Xenor Vernix
Race: Hyur
World: Wutai
Class/Skill Rank: Any
Physical Level: Any
Area and Coordinates: Dhezmeal Darkhold
Party or Solo: Party
NPC Name: None
Monster Name: Not related to monsters.
In-Game Time: Any
Steps: Enter the Dhezmeal Darkhold, run through it enough times and eventually you will crash during a cutscene.