SSH 'Permission Denied', HTTPS works

Hi!

When I try to clone prosum/alpy via ssh (ssh://hg@bitbucket.org/prosum/alpy)

I get these

{{{
remote: Looking up host "bitbucket.org"
remote: Connecting to 184.73.244.143 port 22
remote: Server version: SSH-2.0-OpenSSH_5.1p1 Debian-5
remote: We claim version: SSH-2.0-PuTTY_Local:_Jan_22_2010_20:56:13
remote: Using SSH protocol version 2
remote: Doing Diffie-Hellman group exchange
remote: Doing Diffie-Hellman key exchange with hash SHA-256
remote: Host key fingerprint is:
remote: ssh-rsa 2048 97:8c:1b:f2:6f:14:6b:5c:3b:ec:aa:46:46:74:7c:40
remote: Initialised AES-256 SDCTR client->server encryption
remote: Initialised HMAC-SHA1 client->server MAC algorithm
remote: Initialised AES-256 SDCTR server->client encryption
remote: Initialised HMAC-SHA1 server->client MAC algorithm
remote: Pageant is running. Requesting keys.
remote: Pageant has 1 SSH-2 keys
remote: Using username "hg".
remote: Trying Pageant key BCLOUD-0
remote: Remote debug message: Forced command: ponq smashlong
remote: Remote debug message: Port forwarding disabled.
remote: Remote debug message: X11 forwarding disabled.
remote: Remote debug message: Agent forwarding disabled.
remote: Remote debug message: Pty allocation disabled.
remote: Authenticating with public key "rsa-key-20080229" from agent
remote: Sending Pageant's response
remote: Remote debug message: Forced command: ponq smashlong
remote: Remote debug message: Port forwarding disabled.
remote: Remote debug message: X11 forwarding disabled.
remote: Remote debug message: Agent forwarding disabled.
remote: Remote debug message: Pty allocation disabled.
remote: Access granted
remote: Opened channel for session
remote: Started a shell/command
remote: Permission denied (publickey,gssapi-keyex,gssapi-with-mic).
remote: Server sent command exit status 0
remote: Disconnected: All channels closed
no suitable response from remote hg
}}}

I have writer permission for this repo, according to owner. Other repos (both mine and others' works fine with ssh.

Any help on this?