I have 4 SSD in RAID0 on ICH10 (X58 chipset board) with OROM 11.5.0.1414 and IRST 11.5.0.1207 installed. Windows 7 U x64 SP1.

I have been trying the procedure outlined here, but it does not appear that TRIM is working, that is; the clusters never zero out.

Is that to be expected?