I have 3 XP PCs on a Gigabit router switch, with a Dlink 323 NAS too. From one of those PCs, I am facing very slow access to the NAS drive - with directory reads taking as much as 2-3 minutes. From all other PCs, the NAS drive access is snappy - under 2 seconds for directory read. Strangely, even from the problem PC, accessing other network drives (on the other 2 PCs) is fast as normal - only access to the Dlink NAS drive is a problem. I tried pinging from the problem PC to the NAS box and I get under 1ms response times consistently. What could be the problem here?