the default hd for Thinkpad T61 is "120.0 GB - Serial ATA-150 - 5400.0 rpm "
>>> serial ATA-150 <<<
according to the spec his SATA interface is compatible with 300 but maybe since the previous HD was maybe at 150 you need to set it up somewhere in the bios to go to 3gb instead of 1.5gb
this is most probabily why your SSD is going slow
actually in the lenovo site there is a firmware upgrade specific for SSD in thinkpad
maybe it will fix your problem
Thanks for your reply! In looking into the specs on my particular Thinkpad (the T61), and on the Lenovo forums, Lenovo did not switch on SATA3 on this and prior models "due to the issues of compatibility with the PATA ultrabay and the power usage on battery." It appears the PATA ultrabay, which can only run at the equivalent of SATA1.5, also holds back the main HD. No upgrade to the BIOS is planned. Switch not available in current BIOS. Sooooo.... I'm stuck with half the performance most everyone can get out of these drives. Still very good, but missing a bit of the "wow" factor.