Yes, there is. Click the "My Account" tab at the top of your profile page, and then the "Following" button. The hubbers you are following are one of several lists of items you follow (including topics, individual hubs, etc.) The Hubbers are listed alphabetically under one button and arranged by the lastest published hubs under another button. This makes is handy for checking their new hubs so you can visit and comment. It's faster than other methods of being informed about this valuable information.
Under "My Account" you can also click "Activities" and see any new fan mail, and other good information. Under "My Account", click "Hubs" and then "Comments" to see any comments posted by ohers on your hubs so you can easily go and acknowledge them.
Handy, isn't it? Check out all the tabs. "My account" is available wherever you are visiting on Hubpages, by the way.