I was trying to fix the "Your WordPress.com account is not authorized to view the stats of this blog" issue. Since many people are saying that installing Jetpack (jetpack.me) would fix it, I tried this new plugin.
First I deactivated WordPress.com Stats, then I installed Jetpack and authorized the Stats module with my wordpress.com account. Everything should be fixed and stats should be up and running again (as far as I've read in the forums).
Now the issue is when I access /wp-admin/admin.php?page=stats on my blog it only shows the following message:
invalid_signature: The timestamp is too old.
How can I fix it?