It seems to work well with other packages that are not the kernel, e.g.
$ apt-get source apt=0.7.25.3ubuntu7
Reading package lists... Done
...
Get:1 http://archive.ubuntu.com/ubuntu/ lucid/main apt 0.7.25.3ubuntu7 (dsc)
[1,350B]
Get:2 http://archive.ubuntu.com/ubuntu/ lucid/main apt 0.7.25.3ubun
I don't know if I'm wrong or this is a real bug. I can't also get the
exact version of a package source. I triedmany combinaisons without
success...
$ apt-cache show linux-image-2.6.35-22-generic
Package: linux-image-2.6.35-22-generic
Priority: optional
Section: admin
Installed-Size: 135488
Mainta
