If 00039d48 is part of the block hash, then the block didn't make it into the block chain, as a block with that hash doesn't exist. New blocks show up on BBE within 5 minutes, and they show up in your Bitcoin client after 1 additional block has been generated. Are you looking at the "all transactions" tab in the Bitcoin GUI? If you're using bitcoind, the block won't appear in your balance for 120 blocks.
Anything relevant in debug.log? Any "REORGANIZE" messages?
Hopefully I have no private keys in this log. But here is the message and what follows after the hash in question:
BitcoinMiner:
proof-of-work found
hash: 0000000000039d4875136980d0530e739c9e0130cb2232802398c9a9567da334
target: 00000000000404cb000000000000000000000000000000000000000000000000
CBlock(hash=0000000000039d487513, ver=1, hashPrevBlock=0000000000019592499d, hashMerkleRoot=77f14e4e72, nTime=1294296412, nBits=1b0404cb, nNonce=2805677112, vtx=7)
CTransaction(hash=ca8473cab6, ver=1, vin.size=1, vout.size=1, nLockTime=0)
CTxIn(COutPoint(0000000000, -1), coinbase 04cb04041b0144)
CTxOut(nValue=50.00000000, scriptPubKey=048a9d2b4587e67450dd05fd53a754)
CTransaction(hash=121f59470c, ver=1, vin.size=1, vout.size=2, nLockTime=0)
CTxIn(COutPoint(5a1a13c5da, 0), scriptSig=304402207f7fdb1dbb997d8d)
CTxOut(nValue=0.05000000, scriptPubKey=OP_DUP OP_HASH160 0ecfb38199e1)
CTxOut(nValue=330.60000000, scriptPubKey=OP_DUP OP_HASH160 673282ff376e)
CTransaction(hash=d6138ac345, ver=1, vin.size=1, vout.size=2, nLockTime=0)
CTxIn(COutPoint(db6507c730, 0), scriptSig=3045022031d24dac31ab827d)
CTxOut(nValue=0.05000000, scriptPubKey=OP_DUP OP_HASH160 2c0fc1281675)
CTxOut(nValue=101.01000000, scriptPubKey=OP_DUP OP_HASH160 03aed3be01da)
CTransaction(hash=867bd97731, ver=1, vin.size=1, vout.size=2, nLockTime=0)
CTxIn(COutPoint(71921aabcd, 1), scriptSig=3045022100a810227e08cdc5)
CTxOut(nValue=4.15000000, scriptPubKey=OP_DUP OP_HASH160 6000794d415e)
CTxOut(nValue=0.05000000, scriptPubKey=OP_DUP OP_HASH160 d4ad0d9df193)
CTransaction(hash=a69f0fc99f, ver=1, vin.size=1, vout.size=2, nLockTime=0)
CTxIn(COutPoint(867bd97731, 0), scriptSig=30460221008c6f36cfd31df7)
CTxOut(nValue=0.05000000, scriptPubKey=OP_DUP OP_HASH160 1f7995b575cb)
CTxOut(nValue=4.10000000, scriptPubKey=OP_DUP OP_HASH160 99989a67caa8)
CTransaction(hash=e11662207c, ver=1, vin.size=1, vout.size=2, nLockTime=0)
CTxIn(COutPoint(a69f0fc99f, 1), scriptSig=304402201b2280e5b771d3d7)
CTxOut(nValue=4.05000000, scriptPubKey=OP_DUP OP_HASH160 d488c87d2a5f)
CTxOut(nValue=0.05000000, scriptPubKey=OP_DUP OP_HASH160 22c90093e682)
CTransaction(hash=b8b3603bb0, ver=1, vin.size=1, vout.size=2, nLockTime=0)
CTxIn(COutPoint(e11662207c, 0), scriptSig=3045022049b5c9d859e92bc8)
CTxOut(nValue=4.00000000, scriptPubKey=OP_DUP OP_HASH160 dc3eeff5cdaa)
CTxOut(nValue=0.05000000, scriptPubKey=OP_DUP OP_HASH160 836ab0e197bf)
vMerkleTree: ca8473cab6 121f59470c d6138ac345 867bd97731 a69f0fc99f e11662207c b8b3603bb0 6e42d24eed 86f01b907b 73425c01d7 0a0a969414 0b3f0586f0 75d1dd69d8 77f14e4e72
1/6/2011 06:47 generated 50.00
keypool keep 2
AddToWallet ca8473cab6 new
MainFrameRepaint
SetBestChain: new best=0000000000039d487513 height=101264 work=533984385095310048