Hi, I'm not sure my previous message about fusion ever made it onto the list. I returned my macbook air and have loaded fusion 4, jaws 12, and windows 7 on a macbook pro with 8 gigs of memory and a 1.7 ghz processor. I gave fifty percent of the memory to jaws. I messed around with memory allocation, and it didn't solve my problem. Unfortunately, jaws is stuttering a lot, even when I'm not doing anything particularly demanding. The stuttering seems to happen unpredictably. This clearly can't be a memory or processor issue. Has anyone else experienced this problem? Tasha