Dropped Frames / Odd Rendering

Hello,
As background, I recently completed a project (DVCPRO HD 720p) at a workshop on an iMac. I don't have the specs on the iMac but it's at least a year or two old. I wanted to continue working on this project at home so I have purchased a brand new Macbook Pro 2.0Ghz i7 - 8GB 1333 Mhz DDR3 RAM - AMD Radeon HD 6490M 256 MB. I've installed Final Cut Pro 7.0.3 and I'm using the same GRaid Mini 500GB (Raid 0 - FW800) drive I used in the workshop which is writing at 65MB/sec and reading at 76MB/sec. I'm now getting requests to render clips as well as dropped frames messages where I never did on the iMac. I've spent hours scouring forums (this one, Creative Cow, DV, etc...) and the only suggestion that's made any difference was pumping up the number of real time audio tracks on playback, but most of my problems seem video related. I've turned off the energy saver features, tinkered with render settings, memory, etc..., although I stopped short of modifying the RT Software Enabler file. I'm just not sure what else to try or if I'm even looking in the right place. I have to believe this Macbook should blow the doors off that iMac but maybe I'm wrong. Any help is appreciated.

OK, your problems are:
You are tying to edit with video that is in the H.264 codec.
H.264 is a recording and delivery format, it is not designed for editing, as it is very, very processor intensive.
Your clips are also in a different frame rate than your sequence 29.97 and your sequence is 23.98.
The source clips are a non-standard frame size 540 x 360.
It would be tough going for any computer to play this combination of incorrect item properties back in real time on a timeline that has a 23.98 frame rate and a DVCPRO 720P60 codec.
This is a perfect storm of miss-matched material.
Is your sequence setting because you have camera footage shot in that format? Is the camera material 23.98?
What format material do you have the most of?
What are you intending to do with this once you have completed it (Make DVD, post to web site, make Blu-Ray, etc.) ?
MtD

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    Tagged date                      : UTC 2009-07-01 05:37:04
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    Format                           : AAC
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    Format profile                   : LC
    Format settings, SBR             : No
    Codec ID                         : 40
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    Maximum bit rate                 : 139 Kbps
    Channel(s)                       : 2 channels
    Channel positions                : L R
    Sampling rate                    : 44.1 KHz
    Resolution                       : 16 bits
    Stream size                      : 2.20 MiB (6%)
    Encoded date                     : UTC 2009-07-01 05:37:03
    Tagged date                      : UTC 2009-07-01 05:37:04
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    jasonlammons wrote:
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