xfprint troubles

[Mihamina (R12y) Rakotomandimby]

Hi all
I run tribe-4 and I encounter a freeze of xfprint when trying to print a 
txt file.
When printing it through the CLI with "lpr" it's OK (it prints and is 
ready to print then).

Test case:
- create a text file with mousepad
- try to print it

I use an HP Deskjet 3420 on USB port. The printer was setup through the 
CUPS web interface.