I am in the process of switching all of the databases to 2010. ONe of the items I read was that 2010 does not like .mdw's so I created a security table that assigns the users correct security levels. This seems to work fine but an unexpected glitch appeared -- multiple users cannot access the database now. It is on the shared drive but when one person has it open, the next person clicks on the icon and it doesn't open teh database. I checked that the default open mode was set to shared with record level locks checked but past that, i'm not sure what to check next.