I'm having the same problem, but my ubuntu Linux is 32 bit. I'm getting the following:
ldd bitcoind
ldd: ./bitcoind: No such file or directory
ls -l bitcoind
ls: cannot access bitcoind: No such file or directory
file bitcoind
bitcoind: ERROR: cannot open `bitcoind' (no such file or directory)
I installed bitcoin with:
$ sudo apt-get install bitcoind
It outputted several lines, with the last one being:
ldconfig deferred processing now taking place
I don't know what the above means.
I have the following files in my home/user/.bitcoin folder:
addr.dat blk0001.dat database __db.002 __db.004 __db.006 db.log wallet.dat
bitcoin.conf blkindex.dat __db.001 __db.003 __db.005 DB.CONFIG debug.log
Can anyone suggest on how I can run bitcoind?