Signature Question

[Clough, Samuel (USPC.PRG.Atlanta)]

We recently moved our gpg processes from one server to another.  On the
new server, I installed the latest gpg build.  After that, one vendor
starting saying the signature on our files was bad.  I checked and
checked and gpg declared we were still signing them.  I checked the gpg
output between the old and new servers and found that the new server was
saying DSA/SHA signature applied whereas the old version simply said DSA
signature applied.  I rolled back to the older version (1.2.1) and the
vendor reported that our signatures looked good.  I haven't seen
anything in the notes or man page about different signature methods.
Could someone explain to me what changed with signing files? 
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