I'm going to close this, as the bug seems to be fixed in Edgy, and according to https://wiki.ubuntu.com/StableReleaseUpdates, this bug is probably not serious enough to merit an update to Dapper.
** Changed in: poppler (Ubuntu) Status: Needs Info => Fix Released -- Evince crashes upon attempting to select text, for certain PDF(s) https://launchpad.net/bugs/50697 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs