Hi,
I am managing a site running 7.0rc1 on a Xenon 2.8 with 2GHz ram, and SCSI drives, static IP ADSL 1500/256. There are 20 local users, and 3 remote users. All PCs run XP Pro SP2 and Office 2003.
Local performance seems okay. However, remote users aren't so happy.
Response is very slow, and Outlook freezes often. I've increased the number of Ip instance per second to 2000, from 5 (introduced by SP2 as a security measure - was unlimited in SP1). This seemed to improve things a bit, although still not great.
I suspect that the ADSL connection, at 1500/256, is inadequate - especially given the size and number of both attachements and CC lists.
Cheers