glob operator does not respect nocaseglob

[Nurnberg-LaZerte]

Machine: i386
OS: linux-gnu
Compiler: cc
Compilation CFLAGS:  -DPROGRAM='bash' -DCONF_HOSTTYPE='i386' 
-DCONF_OSTYPE='linux-gnu' -DCONF_MACHTYPE='i386-pc-linux-gnu' 
-DCONF_VENDOR='pc' -DSHELL -DHAVE_CONFIG_H  -I.  -I../src -I../src/include 
-I../src/lib
uname output: Linux asustwo 2.6.0-test9 #2 Thu Nov 20 16:32:15 EST 2003 i686 
GNU/Linux
Machine Type: i386-pc-linux-gnu
                                                                                
Bash Version: 2.05b
Patch Level: 0
Release Status: release
                                                                                
Description: The [-] glob operator does not seem to respect nocaseglob, and is 
inconsistent too. 

EXAMPLE:
asustwo:~$ shopt nocaseglob
nocaseglob      off
asustwo:~$ echo [bd]*
bills bin de docs 
asustwo:~$ echo [a-d]*
B bills bin BP code de Desktop docs Documents
asustwo:~$ echo [b-d]*
bills bin code de Desktop docs Documents