Sorry you're having problems Brian. No problems for me since the update.
I had a quick look in the forums and it looks like there's a couple of people with a similar issue but it doesn't seem to be widespread.
Might be worth post?
I think I'd try updating my graphics drivers as a starter for 10...
I've already posted. A couple have had one freeze but seem to be ok now.
I also downloaded the latest drivers last night and it still froze today.
The only suggestion from the iRacing forums is a new install.
How would I go about doing that? Remove program, then log back into iRacing and it will say service not ready where I will download the software and content again?
What about set ups and settings? As they look to be separate are they all kept in tact or do I need to back them up and copy them back?