weve had bobcad for approx. 4 years now. we started with V23, then we got a copy of V24 and most recently V25. although, we havenst started using V25 yet as it wants to you put in stock geometry for material etc... and im in too much of a rush to learn all of that. so, I cant say for V25. but, with both V23 and V24 we have had issues every now and then where the entire program will just shut down. it does it the most when we try and open up a .dwg file. not all the time, maybe 25% of the time. but, when it does it... it wont stop doing in until we shut down the computer and restart it. it has happened on the two different computers weve had the programs installed on. the first computer ran vista and the new one runs windows 7. anyone else had this before???