URGENT: Can't go live with Feisty or Gutsy-Please help.

[Krsnendu dasa]

We have some students here helping with a project that runs out in a few weeks.
We have tried installing and Feisty and Gutsy, but have run into
problems with both.

Feisty: Printing doesn't work on the client
Gutsy: SMBLDAP doesn't work
            Not sure about the printing.

Both of these are show stoppers.
I would prefer to go with Gutsy, but we definitely need both printing
and SMBldap working.

PRINTING DETAILS
I get a "network host is busy" message from CUPS.

Has the syntax changed from Ltsp 4.2?
It used to be:
PRINTER_0_TYPE=/dev/usb/lp0

Here is my lts.conf file.

[default]
   SOUND=True
   LOCALDEV=True
   NBD_SWAP=True
   SYSLOG=server
[00:50:8b:49:72:dc]
#[ws043]
 SOUND=True
   LOCALDEV=True
   NBD_SWAP=True
   SYSLOG=server
PRINTER_0_DEVICE=U
PRINTER_0_TYPE=/dev/usblp0

The printer is plugged in and the ip address / mac addresses are right.
I know this because it works when I boot the client from K12LTSP6 and
print from edubuntu's CUPS.