Is that not the same as "I disable it when working on a project"?
Whatever the answer to that, the bottom line is that it is now 3 weeks since I updated to PT 2012 and since then I have not been able to use it in the same way as I have for the last few years with exactly the same system set-up as I have now. Even PG support have not been able to come up with a fix. I'm really disappointed because I found PT easy to use but now I'm forced into using a program I'm not so keen on but, unlike PT, it still works perfectly and the more I get into it the less likely it becomes that I'll use PT again.