Not sure this warrants a bug report but here's what happened. I'm running testing repositories and building my own packages, after I upgraded libtool last night calibre would not start. Did crtl + alt + F1 to read the error message and found this -- imagemagick cannot load libltdl.so.7. This prevented calibre from running. Solution was to rebuild imagemagick against the new libltdl installation then rebuilt calibre (possibly and unneeded step but did it anyway). Everything works fine now. Just thought I would pass this on in case anyone else has the same problem. Myra -- Life's fun when your sick and psychotic!