The following bug has been logged online:

Bug reference: 2399
Logged by: Alvaro
Email address: alvaro001@yahoo.com
PostgreSQL version: 8.1.3-1
Operating system: Windows
Description: Postgis DLL corrupted
Details:

Hello, I'm from Argentina.
I've downloaded twice from different computers the win binaries zip file:
postgresql-8.1.3-1.zip
It don't throw any error message during install.
When I've tried to restore a 8.0 PostGIS DB into a new DB it fails when
restoring PostGIS functions, relations, etc.
I've found that no libpostgis.dll is in the lib directory. I think it is
corrupted in the distribution zip.
Well, if it isn't a bug please let me know what I'm doing wrong.
Thank you.
Postgres rules!

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