Thanks jnrk - I've tried every combination I can think of, downloaded the configs again and I still get the speed flagged.
Here's what I currently have:
[ \t\r\n\v\f]*speed[ \t\r\n\v\f]*(300|1200|19200|38400|57600|115200)[ \t\r\n\v\f]*
I've tried it with the leading ^ and without, I've added an * after the speeds but before the [. I don't get it, very frustrated.