I can confirm that Gthumb is slow for me as well, it lags a lot when browsing from image to image, small images are not an issue, but photos from my phone (about 1-2.5 MB in size) lag greatly. Other image viewers dont seem to have this problem. I am using 64-bit 14.04 installed from beta image and fully upgraded, using Unity desktop. I do not however have any errors when starting Gthumb from the console.
DistroRelease: Ubuntu 14.04 Package: gthumb 3:3.3.1.is.3.2.7-0ubuntu1 Uname: Linux 3.13.0-24-generic x86_64 ApportVersion: 2.14.1-0ubuntu3 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1307127 Title: Too slow to use, and feature missing! To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gthumb/+bug/1307127/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs