Yes. A few ways:

1) On the main forum homepage in the "welcome panel" there is a link to subscribed threads

2) if you click new posts button it takes you to the new posts page. However on that page there is a dropdown menu where you can change it to select subscribed threads and click go.

3) Direct from the RCU Toolbar (free install) www.rcuniverse.com/toolbar - with this you can access it from anywhere even if you are not on RCU!