Please can anyone help me solve this problem.
 
I am convinced my scsi devices are not operating as quickly as they used to when I first bought this machine (2 years ago).
 
Dual PIII 500Mhz,
512Mb Ram,
Supermicro P6DGBU (onboard Adaptec SCSI controller 2940, AHA-2940U2/U2W),
Seagate Cheetah 9Gb SCSI (ST39102LW)
Seagate Cheetah 18Gb SCSI (ST318203LC)
Plextor PX-40TS SCSI Cd-rom,
Yamaha CRW4416S SCSI Cd-rom,
Epson Expression SCSI Scanner,
W2K, SP1,
NT4, SP6a,
2 fans.
 
I've noticed that when there are cds in one or both drives, then on startup the machine takes longer to identify the SCSI ids for all the devices.
 
Any idea why I get loads of these messages in Event Viewer;
 
"The device, \Device\Scsi\aic78u21, did not respond within the timeout period. "
(Event ID9).
 
"An error was detected on device \Device\Harddisk1\DR1 during a paging operation. " (Event ID51).
 
"The device, \Device\CdRom0, has a bad block. " (Event ID7).
 
I run Diskeeper frequently (not that I am convinced that this does much).
 
Any help or pointers in the right direction would be much appreciated.
 
Many Thanks,
 
Jez