received the following error messages on ibserver.log:

ERLH16MA (Server) Tue Jan 09 13:23:49 2007
Database: D:\ASTORIA\DATABASE\CBDOC.FB
internal gds software consistency check (attempt to release block
overlapping prior free block (156))

ERLH16MA (Server) Tue Jan 09 13:23:49 2007
Database: D:\ASTORIA\DATABASE\CBDOC.FB
internal gds software consistency check (attempt to release block
overlapping prior free block (156))

ERLH16MA (Server) Tue Jan 09 13:23:49 2007
Database: D:\ASTORIA\DATABASE\CBDOC.FB
internal gds software consistency check (attempt to release free
block (154))

...

ends up in a endless loop consuming 100% cpu load. server does not
response to any client request anymore. anybody knows what the reason
for this issue might be?

happens on: firebird 1.03, Win2003 Server