>I am receiving a huge amount of messages with the following text:
>
> ReadFile end-of-file errno = 109
>
> I am using Firebird 2.1 on Windows 2003 Server Standard Edition. These
> errors did no begin until I upgraded to 2.1.
>
> My application is connecting with the following connection string.
>
> \\138794-we\c:\program files\reactornet technologies\cinema
> solutions\private\db\reactornet.fdb
>
> The application is run on the same machine as the Firebird server.
>
> Any suggestions?

Ignore it.

Every disconnection (despite of correct it or not) will log such entry
into firebird.log.

Regards,
Vlad