Problem with updating modules (check updates) I have Drupal 7.26 with Commons 7.x-3.9. Recentyl manual update of modules is not working. When going to "Modules" - "Update" I'm getting something like:

 Last checked: 4 days 58 min ago (Check manually)

and this is the last time I've been able to check updates (just before Durpal core update).

When I use "Check manually", the page with progress bar appears where progress bar is always "100%" and messages say:

Trying to check available update data ...
Checking available update data ...

After short while it returns to "Update" page with:

 Last checked: 8 hours 5 min ago (Check manually)
There was a problem getting update information. Try again later.

No updates visible, no errors in log.

Any ideas?
Problem solved through cleaning cache_update table (execute SQL query "delete from cache_update;" through phpmyadmin or mysql workbench)