[Wine] wow crashes

[ismolika]

Hi all,
I am playing WoW in wine 1.37 Ubuntu 10.10. Game keep crashing after like 30-40 mins of playing. error i am getting is not reading memory. I also have ventrilo up and running in another desktop. Crashes also happening when i am Ctrl +alt+arrow. 
Another problem i am having is ventrilo looses sound. I have to close it and reopen it to be able to hear people. can anyone help me?
Thanks in advance