Hi!
I am using

Org-mode version 7.9.2 (7.9.2-44-g93f4b7-elpa @
/home/johannes/.emacs.d/elpa/org-20121008/)

and have the following problem:

After I clocked some work I have done and issue the command
org-clock-display, the subtotals are only displayed if the buffer is not
currently in org-indent-mode. Switching modes will solve the problem. If
I switch back the problem comes back.

I attached two screenshots of the two states.

Thanks,

Johannes