Simulation freezes

I'm not simulating a large model, but am using Apple Lion. Any thoughts why I often have to force start Matlab and restart.

[Grzegorz Knor]

Why do you need to do this? What error you get?

Answer 1

[Andreas Goser]

There are tons of reasons for it and your question misses the most important information: What release are you using? Lion is just supported for R2011a and R2011b: http://www.mathworks.com/support/sysreq/release2011a/macintosh.html

If you are using a supported OS/release combination, next step would be to look if all models freeze or just your model. Try some demos for it.

[Stephen]

I am using R2011a, which I bought about 5 weeks ago.