hello,

on one system i've experienced the following problem:

firebird ss 1.5.2 on windows 2003

one day, our application stop working, in log files i've found
exception database corruption:

Exception: database file appears corrupt ()
wrong page type
page 1849263 is of wrong type (expected 7, found 0)

i took the last backup and restore - no problems; to check more
i run gfix -v -full, no error messages. restart the system to
be sure is clean.

after few days of working again the same problem:

Exception: database file appears corrupt ()
wrong page type
page 4051 is of wrong type (expected 5, found 0)

the database is about 40GB size and one table has more than
100e6 records. is there some magic number i'm not aware of?

what could cause the problem? hardware rather not - no messages
in the event log, i will do the disk scan but can not stop computer at
the moment.

thanks in advance,
...michal