Bug report: i see through walls

Before anyone says anything... NO i don't use any program at all. All was ok all day, before last Naia crash. Now i see all npcs and players in short range through walls. It is making me laggy so... i really hate it :( Playing on lower details. Here is some screenshots:
http://img835.imageshack.us/img835/2203/wall2sj.jpg (http://imageshack.us/photo/my-images/835/wall2sj.jpg/)



http://img861.imageshack.us/img861/4514/wall1b.jpg (http://imageshack.us/photo/my-images/861/wall1b.jpg/)

I have the same, in adition to that i have a graphic bug that lets me see what's behind the walls, other structures since GOD started.

After last crash of Naia, it is oki... However i'm not sure if others experience the same thing.

First off as an assumption, even on low detail if your running around aden or other high traffic areas with the hp bar up on player/mobs your gonna lag more. Second with any vídeo game theres a tendancy of vídeo glitches when you pan left or right etc., with the hp bar up its something new to L2 with hiccups here and there.(edited due to silly "smartphone" errors.)