#15 CRC database corrupt

[Martijn Saly]

Almost always when newsgrabber starts with a different
database than the one I used in the previous instance, it
says the CRC database is corrupted and it's rebuilding it.

Frankly I don't know what this CRC database does, and if
it's possible to rebuild the database without after effects,
there are two solutions:
1. rebuild silently without moaning about it.
2. fix the source of the problem ;)

I guess the latter one is the best...