[Evolution] disabling image attachment preview (1.4.6)

[Jules Richardson <julesrichardsonuk yahoo co uk>]

Is there a way of disabling the little image overview that I get at the
bottom of a new email when attaching an image to an email to be sent?

In Evo 1.4.6 it *really* crawls with large images - takes 4-5 minutes to
attach a 2MB TIFF image! It's not just a file size / encoding issue - I
can create a 2MB text file and that just takes a few seconds to attach. 

I assume it's just thrashing like mad trying to make a little overview
picture for me (when I know what the image is anyway, or I wouldn't be
attaching it :-)

I'm running Evo via a remote X display to the host machine (a dual CPU
Pentium 600MHz) - I don't know if the delay is because the display's
remote, or if the same performance problem hits everyone. 

Any way of stopping the overview and just treating any attachment as
binary data?

cheers,

Jules