Will my Canon CanoScan 500F scanner work with Lion?
It looks like some old saved settings were causing the scanner to hang indefinitely  - pressing scan over and over wasn't working.

I pressed the show details button a few times but didn't realize things were working slowly in the background. After a minute or so - I was able to get into the details, change some settings, and it has been working well. 


Those TWAIN errors are not logging now either. Life is good again in Lion scan land.