lp0 problem

[Jaroslaw Berezowski <berezows@jota.ii.tuniv.szczecin.pl>]

Hey.

After switching from 2.0.36 to 2.2.5 I've lost the lp support working.
Copying into /dev/lp0 causes deadlock of executing process.
Here are some config infos:
*******************************************
#dmesg
<snip>
parport0: PC-style at 0x378, irq 7, dma 3 [SPP,PS2]
lp0: using parport0 (interrupt-driven).
<snip>
*******************************************
When the printer is on during boot, there is one additional line:
*******************************************
#dmesg
<snip>
parport0: PC-style at 0x378, irq 7, dma 3 [SPP,PS2]
lp0: using parport0 (interrupt-driven).
<snip>
lp0 off-line
*******************************************
Here are some /proc files contents:
*******************************************
/proc/parport/0/hardware
base:	0x378
irq:	7
dma:	3
modes:	SPP,PS2

/proc/parport/0/devices
 lp

/proc/ioports
<snip>
0378-037a : parport0
<snip>
*******************************************
Note that under 2.0.36 printer is working (as /dev/lp1 of course).
All settings are coherent with BIOS.

What's going on?

TIA

Jaros