Importing digital video is very slow

Hi, I just bought a new Canon HF R40 camcorder and I am finding a few problems.  I've tried editing in iMovie 09 (iLife09) not sure if that's  and the program doesn't recognize the camera at all.  With the old iMovie program, I would just turn on the video camera and vio la...it recognzied it no problem.  This has left me with transferring movie clips directly from the SD card which seems painfully slow.  Now I was able to put together a short video with iMovie 09 but was unable to use any titles because the program would crash once I pressed the icon for Titles.  BTW I was taping in MP4 formate for the purpose of getting it on youtube. 
So my questions are:
1.  Is editing from digital video vs DV tape slower in general?  At this rate I ask why anyone would find any pleasure in editing with digital video.
2.  Is this because I'm transferring from an SD card vs directly from the camera?
3.  Is iMovie 11 better at handling digital video?
4.  Does anyone know why the program is crashing when using trying to use titles?
I really appreciate any advice with this problem.  I figured it was time to upgrade into a new camcorder but it sure seems that DV Tapes are much easier to work with and I'm on the verge of just returning the camera. 
Thanks,
Orlando

You may find these useful:
iMovie 11 - cameras supported:
http://help.apple.com/imovie/cameras/en/index.html?lang=en_US
iMovie 9 - cameras supported:
http://support.apple.com/kb/HT3290?viewlocale=en_US
iMovie 8 Camcorders supported:
http://support.apple.com/kb/HT1014
Digital camera RAW formats supported by OS X Lion:
http://support.apple.com/kb/HT4757?viewlocale=en_US
Digital camera RAW formats supported by OS X Snow Leopard:
http://support.apple.com/kb/HT3825?viewlocale=en_US

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