This bug could be in the AbiWord package also, I guess.
For an "electronic business card attachment (foo.vcf)" Evo shows what
looks like an inline instance of AbiWord. When you close the window
containing this AbiWord plugin, with the inline attachment expanded,
Evo will lock up.
So probably it shouldn't use AbiWord here, and when it does use
AbiWord, it should not lock up.
This turns out to be a gnome-vfs bug, in
gnomme_vfs_get_default_component IIRC. Ray has a fix for this which
is pending release-team approval; reassigning to him, and changing
component to gnome-vfs2
(Arguably Evolution should survive such things, though)
This is fixed now...