i checked them and its not CHMOD problem
it maybe a safe_mode problem
i find some open_basedir probs in the log
the good thing is i disabled cache by files
i now use my super hyper strong Mysql server to cache every thing
i acn't say how am satisfied with IPB
really awsome
there is some more things like how to activate wysiwyg in the editor but am not sure if i can keep asking here or open new thread for each question (don't know how your support policy is made)
Best Regards