--- Maya Opperman wrote:

> A client of ours has upgraded their network cards to 1000 mbps.

Which operating system? Which network card?

> Apparently the only settings they have changed is the speed of the
> network card, nothing else.

You mean they had Gigabit ethernet card in that machine before but
used it a 100mbps OR they installed new card? If it's a new card, it
could affect some other settings in the system.

> Copying a file over the network is much faster on 1000 mbps,
> but opening our Firebird application goes from 6 seconds to 20
> seconds.

Check firebird.log for networking errors.

--
Milan Babuskov
http://www.guacosoft.com