Description of problem:
I noticed that the build process was hanging on libsigc++2 when
building GNOME from CVS with jhbuild. Downgrading doxygen to 1.3.5
fixed the problem for me.
Version-Release number of selected component (if applicable):
Reproduced every time I tried building.
Steps to Reproduce:
it seems to be fixed in 1.3.7 and is not reproduceable in this version.
It will be showed up in rawhides soon. Thanks for your report.