Cups samba printing very slow!

[Vittorio De Martino]

At last I have been able to set up cups under kde 3.4 to print from my laptop 
with freebsd 5.4 to an epson stylus color 640 printer connected to another pc 
seen by cups in the laptop both as an ipp printer under freebsd 5.4 (seen 
from the laptop as the cups server)  AND - more frequently - as an smb 
printer under windows XP. 
The network connection from the laptop on which run both samba and cupsd and 
the pc is made by means of a wireless 11Mb card and an access point.

While printing to the windows XP pc through samba by means of 
lpr -Psmbepson file
is pretty fast and immediate, printing from an application like kword, 
konqueror which format the text takes at least 1.5-2 minutes to start, 
against few seconds with a direct parallel port connection and  about a 
bearable 30-45 secs with an ipp printer connection to the freebsd box.

Are those differences acceptable ot there's something to be improved?
in case of a no, what should I check?

Vittorio