[ale] Need to edit down a 2GB file.

[scherrey at proteus-tech.com (Benjamin Scherrey)]

I have a KMail MBox mail file that grew to over 2GB accidently and it 
apparently can't handle that. As soon as i try to dl new email the 
program exits and moving emails to another folder then compressing the 
folder is not reducing its size. Can someone recommend a common linux 
editor that will let me lop off the top of the file and save it so it'll 
be below my, apparent, 2Gb limit?

    thanx & later,

       Ben Scherrey