Just because it's a new version (which seem to fix many bugs, according to the changelog). We have 1.3.3 in backports.
conky.sourceforge.net
I have the .deb ready, compiled in kernel 2.6.12-10-686, if you'd like. Compiling was extremely easy as well (my second ever compilation). I'll post a howto to the forum, although I know you don't need it :PpP