the most important fix is the default transaction fee, which is raised to 0.0005/kb if it is below.
0.8.2 Release notes
Fee Policy changes
The default fee for low-priority transactions is lowered from 0.0005 BTC
(for each 1,000 bytes in the transaction; an average transaction is
about 500 bytes) to 0.0001 BTC.
I'm confused
