Disc Problem?

Question

When I run Disc Utility from my iBook and verify the disc, I frequently - but not always - get the result logged at the end of this query. When I startup from my original install disc (OS X 10.4.2) it never finds anything wrong when verifying. I've repaired it anyway and done a complete erase/restore but without adding any extra apps and got the same result. Any ideas
Verifying volume “iBook HD”
Checking HFS Plus volume.
Checking Extents Overflow file.
Checking Catalog file.
Incorrect size for file temp373794
(It should be 0 instead of 15120)
Incorrect size for file temp373798
(It should be 0 instead of 908)
Incorrect size for file temp374123
(It should be 0 instead of 2576)
Incorrect size for file temp374204
(It should be 0 instead of 202)
Incorrect size for file temp374214
temp374214
(It should be 0 instead of 235)",2)
Incorrect size for file temp374235
(It should be 0 instead of 235)
Incorrect size for file temp374248
(It should be 0 instead of 211)
Incorrect size for file temp374249
(It should be 0 instead of 225)
Incorrect size for file temp374256
(It should be 0 instead of 230)
Incorrect size for file temp374261
(It should be 0 instead of 235)
235
rrect size for file %@",1)
temp374282
(It should be 0 instead of 399)
Incorrect size for file temp374364
(It should be 0 instead of 137)
Incorrect size for file temp374375
(It should be 0 instead of 1146)
Incorrect size for file temp374393
(It should be 0 instead of 1194)
Incorrect size for file temp374605
(It should be 0 instead of 116)
Incorrect size for file temp374702
temp374702
ould be %@ instead of %@)",2)
0
2271
Incorrect size for file temp374711
(It should be 0 instead of 2270)
Incorrect size for file temp374747
(It should be 0 instead of 285)
Incorrect size for file temp374785
(It should be 0 instead of 6422)
Incorrect size for file temp374796
(It should be 0 instead of 31707)
Incorrect size for file temp374992
(It should be 0 instead of 15393)
15393
orrect size for file %@",1)
temp375009
(It should be 0 instead of 23564)
Incorrect size for file temp375116
(It should be 0 instead of 1225)
ecking multi-linked files.",0)
Checking Catalog hierarchy.
Checking Extended Attributes file.
Checking volume bitmap.
Checking volume bitmap.
",0)
The volume iBook HD needs to be repaired.
Error: The underlying task reported failure on exit
Disk Utility stopped verifying “iBook HD” because the following error was encountered:
The underlying task reported failure on exit
1 HFS volume checked
Volume needs repair

Answer 1

This article seems to shed some light on the situation:
http://docs.info.apple.com/article.html?artnum=302672
I might add though, I would keep frequent backups of your data just in case.