Comment 16 for bug 490935

Storage in in the .msf file is perhaps not a good alternative since I have to
delete my .msf files from time to time and would loose the valuable new subject
lines.

Often I am copying my mail archives from one PC (e.g. my Windows laptop) to
another PC (my Linux workstation), after "compressing" the mail files. I
consider the .msf files not as part of the archive content but just as temporary
index files.

In addition, the msf files are automatically rebuilt each time my mozilla
browser crashes due to some java or shockwave content while a mail window
happened to be open at the same time...