Has anyone burned a disc with toast 11 with an external blu ray burner after installing lion. Mine worked fine with snow leopard as a result I had to go back to snow leopard. I confess I didn't do a clean install of lion so maybe that had something to do with it. I just finished doing a fresh time back up so tonight I when I get home from work, I may try a clean install and see if it makes a difference. If not, then My choice are stay on snow leopard untill either Roxio or apple provides a fix or find alternative burning software. all advise welcome.