I've heard several different suggestions to solve this:
- Delete Interface, Cache and WTF folders.
- Reduce Liquid Detail to Low.
- Uninstall 3rd Party Addon Installers.
- Disable Antivirus.
After reading some posts from people who seem to have fixed this I decided to take the simplest approach I could. I renamed my Interface folder so as not to lose any of my addons and I deleted my Cache and WTF folders. As soon as I opened up Wow.exe I reduced the all Graphics slider to Low and changed Display Mode to Windowed.
Once logged in I tried my Druid which was stuck on the Zul'Aman Loading Screen and it zipped right through without issues. I had also created a Draenei Shaman earlier on today and I wasn't even able to load Azuremyst Isle in order to play on this toon. So I tried logging in as this toon since it worked so well for my druid. Same issue again - Got stuck at about 50%. So I deleted the Cache, Interface and WTF folders again. Loaded up Wow.exe. Reduced Graphics and tried again on my Shaman. This time it looked promising... Until about 80%. Got stuck again for about 2 minutes and then kept loading until about 90%. Got stuck AGAIN for about another 5 minutes and then finally loaded.
Some things still seem to be noticably glitchier in BC content than anywhere else. Like sound is crackly, UI loads alot slower. Environment detail is questionable, etc. Not sure if this is just a result of deleting the cache though.
Can we PLEASE got some kind of a responce from blizzard?! Some kind of acknowledgement that this is a serious issue and that they are addressing this to find the source of the problem? This should be among the high priority as there are so many people faced with this.
I think I speak for everyone when I say we just want to know what is causing this. Please Blizzard! Don't let us down =(