Hope this isn't too much information, but my curiosity is peaked on this 
one.

Mandriva 2008.0
K3b 1.0.3 (Using KDE 3.5.7)

1st ... the process, step by step ...
(a) download *.iso
(b) download *.iso.md5
(c) download *.iso.sha1
(d) cat *.iso.md5 > file1
(e) cat *.iso.sha1 >> file1
(f) md5sum *.iso > file2
(g) sha1sum *.iso >> file2
(h) diff file1 file2
(i) if no difference, then sums check out OK
(j) start ISO write process in K3b, with verify written data checked
(j.1) K3b, of course checks the md5 sum, and it is OK, too
(j.2) write succeeds
(j.3) verify fails (says the original and the written don't match)
(j.3.1) does not give fail until verify secession is complete
(j.3.2) I have not found another error message or any other explanation

2nd ... history ...
(a) I have downloaded 2 DVD ISO's and 4 CD ISO's (and one of the CD's
twice, as mentioned above)
(b) both DVD files have written and verified OK
(c) 3 of the CD files have written and verified OK
(d) 1 of the CD files (and just that one - the one I have downloaded
twice) has written successfully, but failed on verify
(d.1) 6 fails on the first download, and 1 on the second ... I may learn
slow, but I do learn
(d.2) after the 6 fails, I wrote and verified a different (and larger) 
CD file just to verify that ...
(d.2.1) the drive is still OK
(d.2.2) the blank CD-R's were OK ... a moot point since the other files
were all writing on this batch of CD-R's

My guess (operative word being guess) is that the K3b software is OK,
the CD-R's are OK, and the DVD/CD drive is OK

I have never seen this before, and I do wonder what it might be.
Thanks
Regards
Fred James

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