Comment 2 for bug 562698

To investigate whether there is damage in the folder, please put this
in your .vm file.

(defvar summary-std-with-size
 "%n%*%UD %2M/%-2d %-17.17F %8c%UB %I%s\n")

Then, in the folder buffer, do

  M-x vm-set-summary-format <RET>
    summary-std-with-size <RET>

This should put the summary in my format. If it doesn't, try doing
M-x vm-fix-my-summary!!!

Once you get the summary in my format, check to see if any messages
have '-' sign next to the message size field. All those messages
don't have message bodies. Then, we need to worry about why they
don't have message bodies.

If it looks like there is a serous problem, I need you to go back to a
safe version of VM immediately. I am getting worried :-(

Uday