Breadcrumb nav in user groups

I don't know exactly whether this issue refers to the profile.module or the pushbutton theme, sorry.

The profile.module allows the cration of pages that atumatically list all the users with the same value in a specific field (users that selected "Catalan" in the "Mother language" field).

The problem is that the breadcrumb navigation is missing in those pages, so the users may be confused because a important bit of information is is missing.

For instance, here you have a (short) list of users interested in Politics: http://espiral.org/profile/profile_temas/pol%C3%ADtica

"Corros temáticos" refers to the "topic groups" but "Política" is missing, so there is no way to know what is the preferred topic of these users unless you see the "pol%C3%ADtica" in the URL.