samba - Feb 2010 - Problem with printer since update to samba 3.4.5

Hi all,

I have a problem with some client about printing.
Client unable to print.
I must play by restarting spool server services and/or uninstall/reinstall 
printer on client.

And in the log file, I have

[2010/02/16 14:18:46,  0] lib/charcnv.c:641(convert_string_allocate)
  Conversion error: Illegal multibyte sequence(?)
[2010/02/16 14:18:46,  1] ../librpc/ndr/ndr.c:374(ndr_pull_error) 
  ndr_pull_error(5): Bad character conversion
[2010/02/16 14:18:46,  0] rpc_server/srv_pipe.c:2332(api_rpcTNP)
  api_rpcTNP: \spoolss: SPOOLSS_OPENPRINTEREX failed.
[2010/02/16 14:18:46,  0] lib/charcnv.c:641(convert_string_allocate)
  Conversion error: Illegal multibyte sequence(?)
[2010/02/16 14:18:46,  1] ../librpc/ndr/ndr.c:374(ndr_pull_error)
  ndr_pull_error(5): Bad character conversion
[2010/02/16 14:18:46,  0] rpc_server/srv_pipe.c:2332(api_rpcTNP)
  api_rpcTNP: \spoolss: SPOOLSS_OPENPRINTEREX failed.
[2010/02/16 14:25:29,  1] smbd/service.c:1047(make_connection_snum)

What's happening ?

OS : RedHat Enterprise Linux 5.3

Sincerly

        St?phane

-----------------------------------
St?phane PURNELLE                         Admin. Syst?mes et R?seaux 
Service Informatique       Corman S.A.           Tel : 00 32 (0)87/342467