Started happening last week, this became doubled:
$ ls /dev/disk/by-id/ | head -n 1
ata-FUJITSU_MHT2040AT_FUJITSU_MHT2040AT_NN4GT531H3AR
----------------- -----------------
^^^^^^^^^^^^^^^^^ ^^^^^^^^^^^^^^^^^
Debian Release: squeeze/sid
APT prefers experimental
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=543452
Or am I seeing things?