Since when could you not 10 man SM?

[suntimehappy]

wasted a lot of peoples time getting a raid together for SM armory. The instance used to be a possible 10 man (5 man normally though), since when was this changed?

 

[Klinda]

This was changed a while back actually, i think it was sometime in wrath were they reduced it to 5 players

 

[lokah]

That.