Hello, I just fixed the 'db4 locking issue' reported by William R Sowerbutts. There is now one exclusive lock over the database. I recycled some code from ME's original hcache code and it works just perfect. ;-) current version is on http://wwwcip.informatik.uni-erlangen.de/~sithglan/mutt/mutt-cvs-header-cache.10 Thomas