I am running SU7.1 on an iMac with OS X 10.6.3 installed.

I notice that the Select tool stops working after a few Cmd-Ns. Sang can't be selected and vaped. All is OK after a power off-on. This can also be seen as happening after SU has been up about 2-3 hours. Come to think of it, other tool changes were getting a bit slow before this happens, too.

This gets a bit irritating. Do other (Mac) users have this? Can it be fixed?