Very curious networked Laserjet printing problem

Hello to all!

What might be the reason for an HP Laserjet P1505N (networked) printing a standard MS Word text document as garbage characters (mainly extended ascii)? BUT if the text is formatted to a colour however (I've been using dark red!) it prints correctly.

Graphics (bitmaps) print OK

USB (direct PC to printer connection works fine)

So in other words down the network colour text or graphics is OK but normal black text documents are not.

Any ideas would be very much appreciated, I assume some kind of driver mix up but because of the strange workaround I thought the exact cause might ring some bells with someone (seems like a bit or a byte has lost the plot somewhere along the line (127..256 7,8 bits ascii tables etc etc)).

Thanks for any help....rob

Win XP, & 2003 server

Thanks for reply (sorry not to get back sooner!!)

It happens with the only two wired networked machines that are supposed to see the printer, two wireless laptops print to it fine, oh yes one more wired machine will not print at all even though it sees the printer and lists it happily as default??!!