Converting Pegasus mail folders (maildir) to mbox format (for Thunderbird or kmail)

I have been using the KMail converter, to convert Pegasus email folders for 
KMail useage. There has been some minor problems, in that not all of the 
emails messages within some folders, were successfully converted. I can see 
parts of one email in a KMail msg, and then parts of a header from another 
email at the bottom of that one.

Have come across a php script called "Converting pegasus mail folders 
(maildir) to mbox format (for Thunderbird or kmail)" , it can be downloaded 
from:

http://www.phpclasses.org/browse/package/4611.html

HTH

Peter