No - they just told me to go onto the forum and search! Not very helpful at all really.
Having read some threads, it seems that CS3 isn't very good on OSX 10.7.2, so it looks like I may have to upgrade to the latest version anyway. I am just concerned that the problem will stay on the new version if I go down that route.
I will try the suggestion from your link and see if that works.
Thanks for the reply.