When I open the search dialog, usually with "Ctrl-Alt-F", BibleTime usually crashes with the output "Segmentation Fault" on the console.
This occurs in 2.6, 2.5, 2.4 (I think), and 2.3 (I think - I can no longer build 2.3 on my system, which I think is the version I was using until recently).
I think this started occurring when I upgraded some libraries, not BibleTime. I then tried upgrading BibleTime to see if it was fixed. It could be that the libraries are now buggy, or that they have fixed something that BibleTime was relying on, I don't know.
Running Ubuntu 9.10 (Karmic) with some backports.
libqt4-core = 4.6.2 (4.6.2-0ubuntu3~karmic1~ppa1)
libqt4-webkit = 4.6.2 (4.6.2-0ubuntu3~karmic1~ppa1)
sword = 1.6.0 (1.6.0+dfsg-1)