zero install - serious critiques?

["David M. Besonen" <davidb@panix.com>]

hi all,

i have recently been reading about the zero install 
system as a result of my interest in the rox desktop.

i personally would prefer to use rox with apt.  
however, it seems the rox devs are primarily packaging 
for zero install.

anyhow, is there any reason i wouldn't want to use 
zero install?  any glaring problems it creates?  the 
zero install website only has Good Things to say about 
zero install (not a surprise as much as a 
disappointment - nothing is perfect).

for reference:
 http://zero-install.sourceforge.net/filesystem.html
 http://zero-install.sourceforge.net/compare.html


peace,
david