Performance discrepancy between two boxes on an active/active?

Howdy. I'm running an Active/Active cluster on a SQL Server 2005
cluster. Both have identical hardware, and obviously the same disks.
One really odd thing I'm seeing, though: the first Active node,
running on the first box, sucks. When trying to connect, list SPs,
"wait 2 minutes to view a job",etc. However, when we recently ran
both instances on the second box, the performance seems much snappier.

Where should I be looking to try and figure out what's causing this?
Neither node is running extra software the other isn't. But
something's going on.

Thanks.
.

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