When I insert a block into a 2D drawing from the block library the scale is different from the other blocks in the drawing. I have not changed the drawing scale and remember the blocks working properly a month or so back. The blocks are "read only" and on a network server so I can't change the scale of the block individually. I must have changed some setting on AutoCAD 2007 on my computer. Any ideas?
 
Todd (2slim)

The problem must be with the "insertion scale" set in the different files.
See "DDUNITS" + "INSERTION SCALE" THAT CAN BE SET TO :
WITHOUT UNITS, FEET, INCHE, MILE, MILLIMETER, ETC...
 
Normaly that should lead to no problems with different drawing units but when you mix old drawings without possibilities of "insertion scale" to set in the "DDUNITS" you have to rescale the objects after insertion.

See also the tip:
http://www.cadforum.cz/cadforum_en/qaID.asp?tip=4581

In DDUNITS try & use the UNITS not as unitless but maybe the scale in which you are working