Confirmed that a fully updated 12.04 install with the following package versions has this issue.
libdee-1.0-4 1.0.10-0ubuntu1 gir1.2-dee-1.0 1.0.10-0ubuntu1
and that installing the following package versions from 12.10 resolves the issue. gir1.2-dee-1.0 cannot be upgraded unless libdee-1.0-4 is upgraded first.
libdee-1.0-4 1.0.14-0ubuntu1 gir1.2-dee-1.0 1.0.14-0ubuntu1
Confirmed that a fully updated 12.04 install with the following package versions has this issue.
libdee-1.0-4 1.0.10-0ubuntu1
gir1.2-dee-1.0 1.0.10-0ubuntu1
and that installing the following package versions from 12.10 resolves the issue. gir1.2-dee-1.0 cannot be upgraded unless libdee-1.0-4 is upgraded first.
libdee-1.0-4 1.0.14-0ubuntu1
gir1.2-dee-1.0 1.0.14-0ubuntu1