Bummer. I run 512mb of ram on my desktop and only problems in Shattrath. Even in Orgrimmar I don't have problems after everthing is done loading and I give it a few seconds to catch it's breath so to speak. My laptop is rocking 4gb of ram so I don't have any lag problems anywhere.

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"BOY: On a hot summer night, would you offer your throat to the wolf with the red roses? GIRL: Will he offer me his mouth? BOY: Yes. GIRL: Will he offer me his teeth? BOY: Yes. GIRL: Will he offer me his jaws? BOY: Yes. GIRL: Will he offer me his hunger? BOY: Yes. GIRL: Again, will he offer me his hunger? BOY: Yes! GIRL: Yes. BOY: On a hot summer night, would you offer your throat to the wolf with the red roses? GIRL: Yes. BOY: I bet you say that to all the boys!" -Meatloaf