yes that is hot. Is that whilst ur pc is under load or at idle?? What case fans do you have?? What approximately is the ambient room temp??
For reference i have a 400gb samsung and at idle its sitting at 29 degrees C with 1x12cm slow case fan, no cpu or gpu fan (zalman reserator). Under full load i've seen it at 42deg. Mine is in an all aluminium enclose which provides good heat dissapation.
Personally, I get uncomfortable if the temp is >=50.
I had a temp sensor read 61 this morning but when I felt the drive it was no where near that hot, so I suspect it is a faulty sensor. At those temps the drive will be hot to touch, if it is not then your sensor might be faulty and I wouldn't worry about it.
If it really is that hot you should look at mounting a fan pointed at the disk. Most cases have a mounting point near the hard drives.
I've got a Maxtor 120gig sata running at 58-60c and suspect this is abit high.
1) am i right?
2) where should it be temp wise?
3) Any recomendations for a good, quiet, efficient cooler if i need one?
Google's recent research paper on hard drive longevity found no coorelation between temperature and longevity. They pretty much found no coorelation between anything (except age) and liklihood of failure.