I have installed a fresh Win2k3 SBS (fully patched) and 3 fresh and fully patched XP Clients. The rest of the network is a DLink ADSL modem that runs into a Watchguard SOHO 6 firewall. Everything is connected via a 3com office connect switch with a gigabit link (to server). The Xp clients run CorelDraw 11 and the files are stored on a share on the network. For some reason the network appears to slow down by lunch time and then opening the corel files starts hanging and crashing the PC's. The server event veiwer is ok but the clients have errors such as 1030, 1054, 1002, 1001 (101), 5719. Any idea why the clients crash. Priniting was slow until i replaced the mapping with and ip address. Is it DNS?