G'day Greg,
Compact and repair and let us know if it improves. All access mdb files swell, but sometimes this is accelerated by certain practises such as dropping a table and recreating it on the fly.
Alternate, do you have a back up of the db from a few months ago? If so, how does it fair now? Has your machine slowed for some reason rather than access/db?
Hope you find a solution, if not blame it on the kinks in the cables. Everyone knows computers are all about 0's and 1's. 0's can roll around kinks in the cable but 1's can get stuck.
JB