I'm using WP 3.2.1 with FW 2011.0706.
Some of my feeds are set to:
"Ready for next update every 60 minutes"
Even when I set my site-wide preferences to 600 minutes.
Turning the plugin off and on doesn't help, nor changing this manually for these feeds.
I am not sure what distinguishes the feeds which are having the bug with the ones who don't.