Back when there was the issue with the tavern level, I didn\'t notice increased hdd activity. However, this doesn\'t mean there was none, just that it likely was linear acess so I didn\'t hear any seeking. If it existed.
However, it looks more like a memory management issue that only results in increased hdd activity due to extreme swapping when the system doesn\'t have lots or memory.
In LigHs case, I think the reason is different from the tavern lagging one, though. It seems to be that indeed models, and more importantly, textures get loaded. These don\'t just have to get loaded into main memory, but also into the gfx cards memory. If that card has only few memory, then it will have to be swapped more often. That will need to go through the systems bus and thus will stall most system functions during that time.
I, too, have little freezes (about 1 second) when exiting the tavern, the library or the dungeon. Also, when I approach the plaza for the first time after a login, it tends to stall a bit. None of that is new, however, and the tavern level lag issue has been removed for me since a while back (IOW, the lag is random again).