I have 2 m0n0wall with version 1.11 in this scenario:

Internet
 |   |
m1  m2 <-> dmz
 |   |
my LAN

In my LAN I have some clients with default gateway set to m1 and some 
clients with m2.
In m1 router I set a static route to reach dmz network via the m2 (the 
route say "from LAN when try dmz network use m2 gateway).

All go right using 1.11 versions but when upgrade the m1 to 1.2b10...
I sucessufully ping from a clients (with m1 as default gateway) to dmz 
server bue I can't reach (for example a telnet or a web browse).
Downgrade the firmware of m1 to 1.1 all go right.

Any ideas?
Bye
Vittore