This is an upstream bug in GIMP's Gaussian blur plugin -- it got fixed in 2.2.13. See: http://bugzilla.gnome.org/show_bug.cgi?id=343047
And here's the commit: http://cvs.gnome.org/viewcvs/gimp/plug-ins/common/gauss.c?r1=1.18.2.3&r2=1.18.2.4 It'd be nice if the fix could make it into LTS's GIMP, since it makes Gaussian blur pretty much useless as-is; we've just tried to get a bunch of schoolkids doing graphical stuff using Ubuntu and got hit by this. It's very easy to reproduce: create a new image. Fill the background red. Create a new transparent layer. Draw a sharp-edged green squiggle on it. Select all and do a 15px Gaussian blur. On 2.2.11 you get a black halo around the squiggle; on 2.2.13 you get a smooth blur. -- broken gaussian blur https://launchpad.net/bugs/48548 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
