I don't recognize that problem...
Tell us the steps (like in a tutorial) how you produced this high poly object...

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This is what i get with simple sphere, planar mapping.And cube with no uvw modifier
So its not mesh problem i think.

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what's your bump or normal map look like? And i wanted a list of steps...

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Step1: create box
Step 2: assign bumpmap to bump slot in material
Step 3: assign material to box
Step 4:render to texture

tried with different levels of bump, tried with new bump texture from scratch, different formats, jpg, tga, tiff...

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Why are you rendering to a complete map and not a normal + diffuse? Whatever...

The weird lights you're seeing are created by the lights in the scene. It might look wrong as a complete map but be fine as a normal & diffuse (no lighting).
The UVW layout tells the computer what to light. You have OVERLAPPING UVW maps. It's trying to to put lighting from different angles in the same texture.

Unwrap your mesh and you'll be fine.

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Well i read to click complete map ( so i did so)
if i have normal map and diffuse instead of complete map effect is same ( to be clear i have two in output window, normals map (element) and diffuse map (element)).
Also i replaced omni light with spotlight (no effect) ;(

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Yes. the funny thing is, all you're doing is turning your bump map into a normal map. And i think that's not what you were trying to do... SO!, I recommend unwrapping your models using UVW unwrap and use a complete map.
To help you better, would require a paragraph describing your goal.

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You sound like some of my teachers back when I was at school Issac. Maybe it's a career path you could consider.

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[Link to www.3dprevis.com]

It's crossed my mind.

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Ok i did as you suggested.
PLain cylinder with bump map and unwrap uv.
Triangles still occur in baked texture.

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That's a shading issue with default scan line. Switch to mental ray.

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)
))
!!!!!!
It works! its longer to render but triangles gone!!!!
It works in all cases even those without uvw unwrap.
Thank you!
Problem is solved

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hey, even dr house is wrong the first time, each episode.

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Yeah isaac, you seem to be pretty good at and enjoy explaining things. teaching is probably even more fun than working at studios in some ways, its way more social than being stuck at your desk with headphones on all day and usually you get to experiment with and are given time to learn all the most up to date 3d software and tools. I used to enjoy being able to work on character animation and building whatever we wanted unlike at a job where you might get stuck texturing buildings for 3 years or something.
Problem is they usually want to hire people with either a masters degree in complicated procedures or someone with 5 years of industry experience. I found it hard trying to find teaching work here in Sydney even after working for 5 years and teaching for 2. They just wanted me to have a degree so they could offer degree courses. and I don't want to go back to uni for 3 years and $30,000 in debt to the government to boot.

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Tutoring sounds a lot more fun than the class room setting. One on one tutoring for pay could be in my future some day...

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Yeh, that thought has crossed my mind too but I'm not sure how much demand there would be for it here in Adelaide.

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[Link to www.3dprevis.com]