Long delay starting up in Leopard

I have been finding that my Mac Mini is taking an inordinately long time to start up in Leopard 10.5.5. I have long delays in both the gray screen with the rotating gear, and also in the "blue screen" that appears afterwards. I have tried starting up in verbose mode to see if I can identify a problem in the startup sequence, and there seem to be a number of errors that occur during startup. I have several different external disk drives attached to my Mac (both FireWire and USB), which may be contributing to the problem, but it seems to be slow even when I disconnect these devices. Is there any way to troubleshoot or debug the startup sequence to streamline it and allow the Mac to start up more quickly?
Thanks for any help or input on this.

Dear everyXnewXday,
I'm as mystified as you are. This sounds exactly like my issue. Have you tried starting up in Verbose mode (hold down cmd-V on startup)? This will give you a running log of events that occur during startup, and may indicate where errors are occurring that the operating system has to resolve or work around in order to proceed. I'm no expert in interpreting this information, though, which is why I posted this question in the event others have ideas about how to reduce the amount of computational "red tape."
Do you have many external drives or other peripherals connected to your computer? One thing I have noticed in the startup sequence is that the OS has some difficulty recognizing or mounting some of them (in particular, a Seagate FreeAgent USB drive). Not sure if this is a driver issue, but I believe I have the most current drivers for all my external drives.
- K725

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