This is a quirky little issue and I’m just wondering if anyone else has experienced it. It may be server related.
On one (and only one) of my sites when I click the “Updates” link in the admin menu, it takes 35-40 seconds to respond, and then tells me there are no updates, even though I know I have a plugin that need updating (my Utility plugin). I don’t think it’s an issue with my plugin because updating it worked perfectly on more than a dozen other sites.
I have even tried deleting all the plugins off the site, and it is still taking 35-40 seconds to check for updates. The site did auto-update to CP1.1.1 without any problems.