Hi

I'm working on a bid to setup a forum site for an extremely large multi-site UK organization. I was planning to use UBBThreads (and buy another licence for it rather than use my existing one) however i have a question over its scalability.
Potentially my client could have several hundred thousand users, but i dont know how many concurrent users the system is likely to cope with.

The install would be on a dedicated hosted server (specs to be finalised but likely to be RHEL 5.2, quad cpu and lots of memory and disk), and with potentially an unlimited bandwidth connection to the interweb, so in theory the hardware would cope - i just am unsure about the software.

Anyone running UBB with a significant number of users? Any performance issues out there or things id need to know before hand would be appreciated.

Regards
Baz