harddrive failing? how to test it?

[hanasaki]

Any idea how to test a harddrive?  I have only Linux.  No MS

The below info is really concerning!  I have never seen this drive go 
over 32C.

Aug 23 11:51:02 server smartd[14738]:
	Device: /dev/hda, SMART Usage Attribute:
	194 Temperature_Celsius changed from 145 to 139
Aug 23 12:21:02 server smartd[14738]:
	Device: /dev/hda, 7 Offline uncorrectable sectors