Second optical drive ejects for no reason

I've installed a Pioneer BDR-101A Blu-ray drive in the secondary optical drive bay in my Mac Pro 1,1, which has two 2.66 Dual-core Xeons, 5GB RAM, and an NVIDIA GeForce 7300.

Since installing the Blu-ray drive, the eject button seems to have a mind of its own. Notably, it will eject the tray with nothing in it when the computer wakes up, when I launch Toast, and when I start the computer up. Has anyone else had this problem with a secondary drive in their system. What should I try to make this stop.

Thanks in advance.

Chris