I have the exactly same problem on my servers too and I have latest updates installed (installation cd was 3.1):
Wget is complaining against certificate of ceph.com, when I try it run separately:
wget -O real.asc 'https://ceph.com/git/?p=ceph.git;a=blob_plain;f=keys/release.asc'
--2015-02-11 14:31:45--
https://ceph.com/git/?p=ceph.git;a=blob_plain;f=keys/release.asc
Resolving ceph.com (ceph.com)... 208.113.241.137, 2607:f298:4:147::b05:fe2a
Connecting to ceph.com (ceph.com)|208.113.241.137|:443... connected.
ERROR: The certificate of `ceph.com' is not trusted.
ERROR: The certificate of `ceph.com' hasn't got a known issuer.
# pveversion -v
proxmox-ve-2.6.32: 3.3-139 (running kernel: 2.6.32-34-pve)
pve-manager: 3.3-5 (running version: 3.3-5/bfebec03)
pve-kernel-2.6.32-34-pve: 2.6.32-140
pve-kernel-2.6.32-23-pve: 2.6.32-109
lvm2: 2.02.98-pve4
clvm: 2.02.98-pve4
corosync-pve: 1.4.7-1
openais-pve: 1.1.4-3
libqb0: 0.11.1-2
redhat-cluster-pve: 3.2.0-2
resource-agents-pve: 3.9.2-4
fence-agents-pve: 4.0.10-1
pve-cluster: 3.0-15
qemu-server: 3.3-3
pve-firmware: 1.1-3
libpve-common-perl: 3.0-19
libpve-access-control: 3.0-15
libpve-storage-perl: 3.0-25
pve-libspice-server1: 0.12.4-3
vncterm: 1.1-8
vzctl: 4.0-1pve6
vzprocps: 2.0.11-2
vzquota: 3.1-2
pve-qemu-kvm: 2.1-10
ksm-control-daemon: 1.1-1
glusterfs-client: 3.5.2-1