I've been running Newsbin 5.XX for quite some time on my Dual Athlon MP server machine (which has a great 3Ware IDE RAID card with pretty good throughput even by todays standards), and played with Beta 6 on a test machine and am lovin' it.
My problem is that NB6 requires SSE2 in the install - I know the CPU is multiple generations old at this point, but is still quite adequate for running Newsbin for me.
Do you think SSE2 will be required for the final release?
P.S. - If it isn't clear above, NB 6.0 Beta 1 is brilliant. Searching local databases is a genius feature, and the load speed of headers from the DB is light years on from NB 5.59 - thank you sir!