Hi,
I'm encountering the same issue.
I sent 0.02 + 0.00001 BTC to address A, and 1 minute later I entered a 2nd transaction to address B (same fixed source wallet) amount 0.02 + 0.00003 BTC.
First transaction is confirmed, 2nd transaction is pending since 2013-05-03 10:28 .
The trx-ID can't be found on blockchain, too

(I'm connected to carmen.sytes.net )
regards Gaim