i'm the one who started the topic but i cannot login to my account, getting a msg about there's a problem accessing my account.
best solution was by EnlInt, disallowing join solved the problem and it can now be positioned freely and as wanted. i don't know why it chose RDAOU's answer as best answer, but when i couldn't access my account i went to my email and saw i had an email from when EnlInt replied, tried pressing reply in the email but still counldn't access my account then i pressed best anwser and it automatically chose RDAOU's answer.
@FGPerraudin: i'm aware of what your saying but when i check a box where it says "Snaps off" and it doesn't turn snaps off that just doesn't make any sense. and i have to say that i have seen revit automatically change dimensions (when not locked) to also having a value containing a fraction of a millimeter. f.ex. it would display 3500mm but when selecting the wall and looking at the blue number that appears it would display 3500.7 and on another it would be 2799.3mm and every time i changed the value to 3500mm or 2800mm it would display that value but when clicking the wall it would display 2799.3 and 3500.7 but it stopped when i locked dimensions. but i agree it makes perfectly sense to not have infinite precision or go below less than 1mm in something like Revit.
about my nick... the forum chose my nick base on my email. i didn't have my pwd for my email with me so made a new one since it's needed here and chose autodesksucks@ the extra added bits was done by the site itself. why would i choose such an email, well i haven't used any autodesk apps for 10 years and i have literally never had any problems or weird dysfunctional and bugged features in any of the CAD apps that i have used, mostly SolidWorks and CATIA, but also Blender and a few other not so well know apps. now 10 years later i've been using autodesk software again for a couple of month and it's nothing to bugs, problems and weird stuff happening (just like with Inventor ten years ago), in fact it's so bad it spoiling the atmos in the office. but no worries in time all offices will be cleansed from autodesk rubbishware.
EDIT: sorry what i meant to say was.. when i uncheck snaps and they don't turn off that doesn't make any sense.