The most recent K-Meleon build is not 1.5.2, but already
1.5.3 .
There was never a K-Meleon-1.5.1-L-minimal, because
my first version was K-Meleon-1.5.2-L-minimal, my only
minimal version up to now. It has only been updated
from the gecko of Seamonkey 1.1.15 to gecko 20090403 from
Seamonkey 1.1.16, before the official KM-1.5.3 came out
and should therefore be as safe as a KM-1.5.3.
The structure of this L (=Linux) minimal version has not changed,
only the Gecko engine, and that for security reasons.
You can still download K-Meleon-1.5.2-L-minimal from here :
http://one.xthost.info/eichhein2/KM1.5.2-L-minimal.zip
Regards
Fred