AFAMgt errors

I have a pe4400 w/ a Perc 3/Di and Win 2000 Server. I'm seeing the following Warnings in the Event Viewer and am wondering if this indicates a failing drive on ID 4.

Thanks.

Event Source: AFAMgt
Event ID: 20
Description: \Device\AFA0 : ID(0:04:0); Unexpected Bus Free [command:0x28]

Event Source: AFAMgt
Event ID: 20
Description: \Device\AFA0 : ID(0:04:0); Error Event [command:0x28]

Event Source: AFAMgt
Event ID: 20
Description: \Device\AFA0 : ID(0:04:0); Unit Attention [k:0x6,c:0x29,q:0x86]

Event Source: AFAMgt
Event ID: 20
Description: \Device\AFA0 : ID(0:04:0); Power On, Reset, or Bus Device Reset