% stephan@armen (/home/stephan) %
% perl -w datah_seek_oddity.sh
Using Perl 5.008007

Result using DATA:

Found at 634: >NEWTABLE - third line<
Reread as >NEWTABLE - third line<

Result using file handle:

Found at 634: >NEWTABLE - third line<
Reread as >NEWTABLE - third line<