10.04 image in UEC store crashing on boot

Hello,
I have installed UEC from the Maverick server amd64 cd, with the standard configuration: everything except the NC on the same machine, and the NC on a separate one. It is working great with the image of Ubuntu 10.04 i386, downloaded through the UEC store.
The amd64 version of the Ubuntu 10.04 image (also downloaded through the store), however, fails to boot.

There seem to be others facing the same problem [0],[1].

I've attached the full boot log. Here's the interesting part:

Begin: Mounting root file system... ...
Begin: Running /scripts/local-top ...
Done.
[ 3.990704] Intel(R) PRO/1000 Network Driver - version 7.3.21-k5-NAPI
[ 3.991969] Copyright (c) 1999-2006 Intel Corporation.
Begin: Running /scripts/local-premount ...
[ 4.090535] FDC 0 is a S82078B
[ 4.093643] ACPI: PCI Interrupt Link [LNKB] enabled at IRQ 10
[ 4.094741] e1000 0000:00:02.0: PCI INT A -> Link[LNKB] -> GSI 10 (level, high) -> IRQ 10
Done.
[ 4.164719] kjournald starting. Commit interval 5 seconds
[ 4.165776] EXT3-fs: mounted filesystem with ordered data mode.
Begin: Running /scripts/local-bottom ...
[ 4.459734] e1000: 0000:00:02.0: e1000_probe: (PCI:33MHz:32-bit) d0:0d:3f:04:07:fe
Done.
Done.
Begin: Running /scripts/init-bottom ...
Done.
[ 4.554572] e1000: eth0: e1000_probe: Intel(R) PRO/1000 Network Connection
[ 4.768202] EXT3-fs warning: checktime reached, running e2fsck is recommended
[ 4.793158] EXT3 FS on sda1, internal journal
consuming user data failed!
Traceback (most recent call last):
  File "/usr/bin/cloud-init", line 90, in <module>
    main()
  File "/usr/bin/cloud-init", line 47, in main
    cloud.consume_userdata,[],False)
  File "/usr/lib/python2.6/dist-packages/cloudinit/__init__.py", line 215, in sem_and_run
    if self.sem_has_run(semname,freq): return
  File "/usr/lib/python2.6/dist-packages/cloudinit/__init__.py", line 173, in sem_has_run
    semfile = self.sem_getpath(name,freq)
  File "/usr/lib/python2.6/dist-packages/cloudinit/__init__.py", line 167, in sem_getpath
    freqtok = self.datasource.get_instance_id()
  File "/usr/lib/python2.6/dist-packages/cloudinit/DataSourceEc2.py", line 64, in get_instance_id
    return(self.metadata['instance-id'])
KeyError: 'instance-id'
init: cloud-init main process (538) terminated with status 1
mountall: Event failed
 * Starting AppArmor profiles [ OK ]
Traceback (most recent call last):
  File "/usr/bin/cloud-init-cfg", line 56, in <module>
    main()
  File "/usr/bin/cloud-init-cfg", line 43, in main
    cc = cloudinit.CloudConfig.CloudConfig(cfg_path)
  File "/usr/lib/python2.6/dist-packages/cloudinit/CloudConfig.py", line 42, in __init__
Traceback (most recent call last):
  File "/usr/bin/cloud-init-cfg", line 56, in <module>
    main()
  File "/usr/bin/cloud-init-cfg", line 43, in main
    cc = cloudinit.CloudConfig.CloudConfig(cfg_path)
  File "/usr/lib/python2.6/dist-packages/cloudinit/CloudConfig.py", line 42, in __init__
    self.cfg = self.get_config_obj(cfgfile)
  File "/usr/lib/python2.6/dist-packages/cloudinit/CloudConfig.py", line 53, in get_config_obj
    self.cfg = self.get_config_obj(cfgfile)
  File "/usr/lib/python2.6/dist-packages/cloudinit/CloudConfig.py", line 53, in get_config_obj
    f=file(cfgfile)
IOError: [Errno 2] No such file or directory: '/var/lib/cloud/data/cloud-config.txt'

Thanks for your support!

[0] http://open.eucalyptus.com/forum/possible-bug-when-dns-server-has-names-elastic-ips
[1] http://open.eucalyptus.com/forum/lucid-image-image-store-x8664-doesnt-run