White Lines on Live Traced Artwork in PDF from Illustrator CS3

Hi,

I've recently been using the Live Trace feature in Adobe Illustrator CS3 on my artwork so that my artwork becomes a vector image instead of a raster (I'm told it's better for Web because it works better with varying resolutions - doesn't become pixelated). For my live trace, I use a custom preset:

ADJUSTMENTS-
Mode: Color
Threshold: 128 (grayed out)
Palette: Automatic
Max Colors: 256
Output to Swatches: OFF
Blur: 0 px
Resample: 600 px
Fills: ON <grayed out>
Strokes: OFF (grayed out)

TRACE SETTINGS-
Max Stroke Weight: 10 px (grayed out)
Min Stroke Length: 20 px (grayed out)
Path Fitting: 1 px
Minimum Area: 1 px
Corner Angle: 1
Ignore White: OFF

VIEW-
Raster: No Image
Vector Tracing Result

The preview info, located under the dialogue bubble with the i states:
Paths: 4894
Anchors: (no number)
Colors: 148
Areas: 4822
Image PPI: 200

I don't know if that helps anyone, but that's just the preset I've used to get a sharper, almost fully preserved vector version of my raster image.

When I want to convert it to a PDF file using the File > Save As... > Save as type: PDF with the following preset:

Adobe PDF Preset: Illustrator Default
Standard: None
Compatibility: Acrobat 8 (PDF 1.7)

Then, my image as viewed in the Adobe Acrobat 8 Professional has several white lines, outlining areas of color. You can see it here:

<http://i6.photobucket.com/albums/y218/Mont-ImmortalSquirrel/Ai-PDF_whitelines.jpg>

The image connected to this link was captured with PrntScrn and copied into Photoshop, cropped, and saved as a jpeg. The issue is perfectly preserved, as you can see the white lines outlining areas of color. This problem is persistent despite the zoom level in Acrobat 8.

Just another little bit of information, the problem is most noticeable in the red area and not the cream/white and yellow areas. When I was working on the original raster image in Photoshop CS3, the cream/white area was done with the Ellipse Tool, using Bevel and Emboss in the Blending Options. The same goes for the yellow area, which was done with the Line Tool. The red area was done manually, with the Brush Tool, Smudge, Blur, Burn, etc.

I'm telling you guys just about everything I've done leading up to this issue. But, if there's something you need to know more, I'll try to figure out what I could've possibly done wrong to get this result.

I too get this result when using LiveTrace. My simple solution to this problem was to just place a solid color shape behind that section of the trace where it occurs that is the same color as the trace. Simple...but it worked.