BUG #2363: password authentication failed

The following bug has been logged online:

Bug reference: 2363
Logged by: zhu
Email address: vispper(at)163(dot)com
PostgreSQL version: 8.1.3
Operating system: winxp sp2
Description: password authentication failed
Details:

i download a non-install version of psql, and install it in volumn f:, but i
can not use psql.exe on f:, other volumn was ok. why???

----------------- system information
c: fat16
d: fat32
e: ntfs (system volumn)
f: ntfs (psql app/data volumn)

----------------- how do i run the app
download a non-install 8.1.3 of psql zip file.
extract into f:\soft
goto psql\bin, run
"initdb -D ../data -A md5 -W"
after input superuser's password, i start it
"pg_ctl -D ../data start

----------------- psql commands
C:\>F:\soft\psql8\bin\psql.exe
: ^C
C:\>d:
D:\>F:\soft\psql8\bin\psql.exe
: ^C
D:\>e:
E:\>F:\soft\psql8\bin\psql.exe
: ^C
E:\>f:
F:\>F:\soft\psql8\bin\psql.exe
psql: FATAL: password authentication failed for user "zhu"

----------- pg_ctl LOG
F:\soft\pgsql8\bin>LOG: database system was shut down at 2006-03-29
18:11:24 Ch
ina Standard Time
LOG: checkpoint record is at 0/38C2C0
LOG: redo record is at 0/38C2C0; undo record is at 0/0; shutdown TRUE
LOG: next transaction ID: 567; next OID: 10794
LOG: next MultiXactId: 1; next MultiXactOffset: 0
LOG: database system is ready
LOG: transaction ID wrap limit is 2147484148, limited by database
"postgres"
FATAL: password authentication failed for user "zhu"