Please describe the problem:
Evolution runs horribly when a large email is in the inbox (15+MB) and the
preview panel is turned on. Evolution will take all CPU and more than 500MB of
ram and is reproducable. Evolution never ends up crashing, but since it hangs
the entire desktop, I need to force-quit it. Thunderbird seems to handle these
messages just fine. In fact, I need to open thunderbird up to delete this
message if I've accidently clicked on it in evolution.

Steps to reproduce:
1. Send yourself a 15-20MB email (not an attachment, but text in an email)
2. Make sure your preview panel is turned on
3. Click on your newly recieved message in your evolution inbox. 


Actual results:
Your desktop applications will grow unresponsive and evolution won't close. Most
of your RAM will be consumed by evolution and you won't be able to kill it
without force-quitting.

Expected results:
The email would load in the preview panel, albeit slow (Because it's 20MB).

Does this happen every time?
Yes

Other information:
danv@folgers:~$ uname -a
Linux folgers 2.6.13 #2 SMP Thu Sep 1 09:16:36 CDT 2005 i686 GNU/Linux
danv@folgers:~$ cat /etc/issue
Ubuntu 5.10 "Breezy Badger" \n \l
danv@folgers:~$ evolution --version
Gnome evolution-2.4 2.4.1