Firewire drives disappear for no reason

I have 2 firewire back up drives that since Leopard keep disconnecting.
No rhyme or reason that I can tell.
I will come home and there will be a message saying it was disconnected incorrectly.
Funny, as one will still be connected.
They both do it.
any help would be appreciated. thanks Laura

thanks for your reply.
they are daisy chained and they are both on their own brick.
today I made the decision to go back to tiger. I WANT to like leopard but for a month I have had nothing but troubles-big and small. I partitioned my drive and installed tiger on one and leopard on the other so when there are a few more updates I will try again but for now I just need some stability.
I will see if it was the os or the drives in some way over the next few days.
thanks again for your ideas.
Laura

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Firewire drives disappear for no reason

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