SanDisk Ultra II firmware bug causing slow read/write speeds

I have an Ultra II 960GB, but a differant firmware: X35510RL.  According to Dashboard, it’s fully up to date.  I’ll have to look into this, although I don’t think I want to have the 41100RL firmware if it’s bugged.  Anyways, I want to ask : has this been resolved?  I’m noticing that mine (installed in an HP Pavilion notebook) the performance has degraded (responsiveness and transfer rates, the health status still shows as 100%), although the Dashboard always shows the interface properly as SATA 3 6GB (even after a reboot).