We are having the same problem with our Epson dot matrix printers that we use for printing cartnotes. The printers are all networked and installed with the generic text only driver on a print server running Server 2008 R2. The default paper size is set to a custom form called "cartnotes".
Our branch users all log into our system through Citrix published desktops. Randomly the paper size on the printers will change most often to Letter but other times to one of the other built in paper sizes. This results in incorrect printouts. Most often the paper size only changes within the users Citrix session but other times it changes on the print server as well.
This only started happening after we upgraded all of our branch servers from 2003 to 2008 R2. Previously when on Server 2003 there were no problems with using custom forms as the...