rdesktop "X Error"

[Stephen Mah]

Used to work in rhel4 u4. I'm on fedora now.

X Error of failed request:  BadValue (integer parameter out of range for 
operation)
  Major opcode of failed request:  78 (X_CreateColormap)
  Value in failed request:  0x34a
  Serial number of failed request:  7
  Current serial number in output stream:  8

Fedora Core release 6 (Zod)
2.6.18-1.2798.fc6 #1 SMP Mon Oct 16 14:37:32 EDT 2006 i686 athlon i386 
GNU/Linux

Name        : rdesktop                     Relocations: (not relocatable)
Version     : 1.4.1                             Vendor: Red Hat, Inc.
Release     : 4                             Build Date: Thu 31 Aug 2006 
10:26:15 AM PDT
Install Date: Tue 27 Feb 2007 01:57:24 PM PST      Build Host: 
hs20-bc1-6.build.redhat.com

btw, how do I get yum updates?