How can I reduce Windows 7 boot times?

I have a Sony VAIO laptop that has an i7 processor, 6 GB of RAM and a 7200 RPM 500 GB 2.5 inch drive.

I work in .NET, so I have SQL Server Developer, Visual Studio and a lot of other tools like that.

The machine takes nearly 4 minutes to boot up. I actually timed it this morning and it is 2:45 seconds, although it is still isn't really responsive at that point. It's clear things are still loading, in other words.

I have ReadyBoost but that doesn't seem to help. Most of the boot up occurs before ReadyBoost even comes online, which is a shame because the flash memory for it is quite fast.

Is there a way to speed up the boot time and/or make ReadyBoost more effective?

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