Well, you are talking about a laptop that was new 5 years or so ago...IMO, that's a lot of time to put up with anything or expect superior performance.
From what I see...the laptop had good reviews when it debuted...but I don't put much stock in reviews of such products. A better indicator would be the fact that you have maintained it for 5 years.One Review.
If this were mine...I would start with a clean install of the O/S...on a hard drive that I had run disk diagnostics on...and troubleshoot issues as they occurred from that base.
I imagine that "slow performance" is probably attributable to the fact that all of the original Lenovo software is being used. I would wipe all that and do a clean install of XP (or whatever), using a valid license. You would probably be surprised how much removal of original software and partitioning...can improve performance on a laptop (IMO).
<<...but the hitachi is PATA and connects thru a adapter.>>
That probably does not help performance. SATA notebook hard drives are more readily available and cheaper than IDE drives today...and, of course, they are faster than PATA hard drives.
<<Because of the physical form of the bay and attachments the only choice for the thinkpad is the hitachi hdd.>>
? AFAIK, Hitachi laptop hard drives...are no different than any other manufacturer's laptop hard drives. If you connect one, you can connect them all.
Edited by hamluis, 02 July 2010 - 01:54 PM.