Comment 2 for bug 925781

I have also tried adding DNS A=utf8 as mentioned in their documentation, but this parameter returns the same errors whether default-character-set = utf8 or loose-default-character-set = utf8 is used.
http://www.percona.com/doc/percona-toolkit/2.0/dsn_data_source_name_specifications.html

Tests:
Failed: pt-table-checksum h=c1-dbdev103,u=perconaadm --ask-pass --recursion-method=hosts ##with default-character-set = utf8
Failed: pt-table-checksum h=c1-dbdev103,u=perconaadm,A=utf8 --ask-pass --recursion-method=hosts ##with default-character-set = utf8
Failed: pt-table-checksum h=c1-dbdev103,u=perconaadm,A=utf8 --ask-pass --recursion-method=hosts ##with loose-default-character-set = utf8
Succeeded: pt-table-checksum h=c1-dbdev103,u=perconaadm --ask-pass --recursion-method=hosts ##with loose-default-character-set = utf8