The package kdesktop-trinity from 3.5.13.2 has a strict
dependency on a
particular version of binutils. You'd have to either rebuild kdebase-trinity
with each update binutils or rebuild kdebase-trinity with build option
WITH_KDESKTOP_LOCK_BACKTRACE="OFF" or use a development version R14.
One more thing in addition to Slavek's comment.
Even using the development version (R14), whenever binutils is updated you need to update
also the package libr0, which has a strict dependency on the binutils version. Updated
packages can be found on Slavek's repository:
http://mirror.xcer.cz/trinity-sb/dists/
Given the reasonable stable state of pre v14.0.0, I would suggest you also update from tde
3.5.13.2 to pre v14.0.0.
Cheers
Michele