What camera did you use? Also was exposure and shutter speed locked on the camera or not?
I use a JVC Everio GZ-HM300, this isn't a proper time-lapse video, it was just speeded up using Windows Live Movie Maker, I am uploading a proper time-lapse video by using the actual time-lapse function on my camera, look out for this video on my YouTube account. Also I have no idea about the exposure and shutter speed, sorry.
EDIT: Here are details copied from my camera from Flickr, it's quite a big list!
Camera JVC GZ-HM300
Exposure 0.002 sec (1/500)
Aperture f/1.8
Focal Length 3 mm
Exposure Bias 0 EV
Flash No flash function
Orientation Horizontal (normal)
X-Resolution 72 dpi
Y-Resolution 72 dpi
Date and Time (Modified) 2011:06:25 11:02:47
YCbCr Positioning Co-sited
Date and Time (Original) 2011:06:25 11:02:47
Date and Time (Digitized) 2011:06:25 11:02:47
Metering Mode Center-weighted average
Light Source Daylight
Color Space sRGB
Custom Rendered Normal
Digital Zoom Ratio undef
Subject Distance Range Distant
CPUVersions CPU1 1.00 CPU2 1.21
Quality Normal
GPS Version ID 2.2.0.0
GPS Status Measurement Void
GPS Map Datum WGS-84
Compression JPEG (old-style)
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Here is the proper time-lapse video.
http://www.youtube.com/watch?v=gfMk6aGzVcs