thread lifetime cpu usage 90.016372 seconds, (74.516637 user, 15.499735 system) ledger info: balance: 90007570271 credit: 90007570271 debit: 0 limit: 90000000000 (50%) period: 180000000000 time since last refill (ns): 131905306167 I am having the same problem with 10.6.8.
The first trip to an Apple Store resulted in system restore.
I've also tried Google's 184.108.40.206 and 220.127.116.11 (which I found from GRC's DNS Benchmark to be the fastest).
• Have you tried using 18.104.22.168 (google) or any of the Open DNS 2.222 or 2.220?
Whilst it would remain working when the i Mac was put in sleep mode, it would Obviously any custom rules will have been removed with this restore.