Did you reset all to default after updating the bios? Could be your new Deneb doesn't like the old Agena settings. The board doesn't happen to have ACC does it? If so, make sure it's disabled.......Deneb doesn't play well with ACC.:D
Your bus instability is probably due to the ram being pushed too high. What ram are you using? Drop the ram divisor to 800 and try pushing the bus up, but keep the vdimm at the 1066 setting.:D
Still have an Asus/XP2400+ running (the old woman's machine........she doesn't know the difference:p). I've got an XP1600+ hiding somewhere in my junkpile.
AM3 boards have just been announced by a couple of manufacturers.......doubtful that any OEMs have them as yet. You should start seeing them in a couple of months when the CPUs start rolling out.:D
New paste.........make sure your temp sensing prog is reading correctly........check your voltages (vcore, etc). Your temps should be < 35º idle with the stock cooler at default settings.
I just built a gaming box for a client using a Giga MA790GX, 9850BE, Zerotherm Zen cooler with a small...
I've got one on order from Bottom Line Telecommunications......$296(US) shipped. If you wait a bit after the initial feeding frenzy they'll drop in price. Me....I can't wait! :D
AM3s aren't going to be seen in wild for a couple of months, at least. The board manufacturers haven't announced any AM3 boards and until they do, AMD isn't going to be in any hurry to activate the DDR3 portion of the IMC.......somebody's BSing!:D
Actually, SoF over at XS is running a Phen II @ ~4ghz/air cooled on a Foxconn without enabling ACC. There seems to be much less of an advantage using ACC on the upcoming II than there was with the original Phenom. Time will tell, however.:D