Slightly different from me - maybe I should start a new thread? I'm having problems with switches.I took out two 3COM Superstack II switches and installed three Netgear FS524S. Ever since, various printers and computers are running very slowly - but not all. Some computers wouldn't log on via ports on the middle switch in the stack (but some ports did!). I removed all connections to this switch and users could then log on (in fact 2 are still connected, and working, on this middle switch). It has seemed to cause print problems when printing via a print server across our NetWare 4.11 network, particularly on printers that don't have a network card, and print via an attached print server (a low spec PC Pentium I, 166mhz type of thing). Printing is extremely slow, if not non-existent. Rebooting each printer and print server appears to help, but only in the short term. Have you any advice. Is the higher speed FS424S coming across bottlenecks in our slow network around the print servers? We also have various hubs, with 3\4 users connected to 1 network port. Have I stacked the switches correctly? Netgear suggest there a 'table exchange' problem between Netgear and 3Com, and suggest checking the protocols I'm using, and reinstalling the communication (i.e. reinstall the IP stack). I have little experience as yet - any help would be extremely welcome. Dunc