BUG #4675: FATAL: could not reattach to shared memory

The following bug has been logged online:

Bug reference:      4675
Logged by:
Email address:      kos41@wp.pl
PostgreSQL version: 8.2.11
Operating system:   Windows Vista
Description:        FATAL:  could not reattach to shared memory
Details:

After I have installed Postgresql 8.2.11 on windows vista I have this
entries in my log

LOG:  unrecognized win32 error code: 487

FATAL:  could not reattach to shared memory (key=5432001, addr=02200000):
Invalid argument

What is this? How can I repair this?