Can someone help me on something that's going on 

with my Autocad?

I'm doing dimmensons on Layout and I'm facing a 

problem: Using the same configurations of 

dimmensions, sometimes I get the right dimmension, 

but sometimes, without changing any 

configurations, I get wrong dimmensions. 

At the same drawing, with the same configurations, 

I get different dimmensions to the same line. The 

only way that I'm being able to correct it is by 

using Match Properties (from a correct dimmension 

to the one that went wrong).

Is there any way to fix it or does anyone knows 

what's happening??

Thanks a lot!