Not sure how you are reading the data, but try setting the comparator to ASCII or similar. This will tell Cassandra that the column names are strings.
I get column value from cassandra 0.6 as " (column=2WwADF3V3A0A5b, value=1WwACGIHDn0A45, timestamp=1286949750195000))" format
but get " (column=2WwADF3V3A0A5b, value=3157774143474948446e30413435, timestamp=1286949750195000))" from 0.7 beta3
how can I get the column value in human-readable format as like as from cassandra 0.6 in 0.7 beta3