7.1 betta 2
RB4011iGS + Procurve 2810-24G (J9021A) = 10Mbit on Ethernet port
Are you sure this is a 7.1beta specific problem? I.e. can you confirm there's no such problem with v6?
Also please check you cables. From my own experience, these old HP 2810 series switches are very sensitive to even slight cabling problems, and fallback to 10M half-duplex (or does not work at all until you force it to 10M) where other equipment works just fine.
Had the same problem with an Nokia FTTH ONT on the other side of my RB4011 (also with 7.1beta2). I had to turn off Auto Negotiation and without enabling any speed to advertise it immediately went to 1Gbps Full-Duplex.