dist-upgrade problem

[ray]

My current system is a mixed system, most of packages are from breezy, and a
few from dapper.  Now I want to upgrade to the newly released 6.06. So I
removed the breezy source form sources.list and run aptitude update &&
aptitude dist-upgrade. But the dist-upgrade says:
The following packages exist unsatified dependent relation:
libdbus-glib-1-1: depends: libdbus-1-1( >=0.36.2) but it is not installable.
libopenh323-1.15.3c2: depends libpt-1.8.3c2 but it is not intallable.
...
What should I do?  TIA.
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