Slow Reboot after adding RAM

I maxed out my RAM a few weeks ago, and ever since I have noticed my reboot time went from like 60 seconds to over five minutes. In fact I do not see an increase in performance anywhere. Almost as if I removed some RAM. As far as I can tell everythign was compatible. I also did a test on crucial.com, and everything checked out ok. I am running Vista Home Premium 64 bit. Here is a list of information from crucial:

Each memory slot can hold DDR2 PC2-6400, DDR2 PC2-5300 with a maximum of 2GB per slot.* All fours slot have 2gb DDR PC2-5300.

Maximum Memory Capacity: 8192MB
Currently Installed Memory: 8GB
Available Memory Slots: 0
Total Memory Slots: 4
Dual Channel Support: Yes
<LI class=" sfhover">CPU Manufacturer: GenuineIntelCPU Family: Intel(R) Core(TM)2 Quad CPU Q9300 @ 2.50GHz Model 7, Stepping 7
CPU Speed: 2497 MHz

Any help would be greatly appreciated.

Welcome
This article give information
I would not download from the site as I am not familiar with the safety
I will gather additional information and present what is applicable
I am getting a memory test now
* Tutorial- Tools/Utilities for Troubleshooting slow boot-time/startup performance issues on Windows Vista*by*Tech[dot]Blog

Make 8 passes and then test each slot with a know good stick
http://www.geekstogo.com/forum/topic/246994-guide-to-using-memtest86/

Test with a clean boot
http://support.microsoft.com/kb/929135

Regarless of what crucial.com says, it my opinion that it is never good to mix and match. I think that is the problem or just a bad stick.
http://www.technibble.com/how-to-diagnose-bad-ram/