The following bug has been logged online:
Bug reference: 6237
Logged by: Jim Gray
Email address: jim.gray@bull.com
PostgreSQL version: 9.1.1
Operating system: Windows Vista
Description: Hang during install database initialization
Details:
The only PostgreSQL release that I can successfully install is 9.0.1 I
have tried both 32 and 64 bit Windows installer versions of 9.0.5 and 9.1.1
and all appear to have the same problem. They get to the dialog indicating
that database initialization may take a few minutes, and then even after 30
minutes on a recent quad core PC, nothing is happening. No files are
created in the data directory. The task manager shows that the Postgres
process is not using any CPU time or doing any file I/O. The 9.0.1 install
only takes about 10 seconds at this stage. I have tried the installs with
anti-virus software disabled, but that didn't help.