This worked. Reproduced the bug in oneiric (evidently an infinite loop), the problem went away in -proposed. Normal ecryptfs operation (via ecryptfs-setup-private) also appears to be unaffected.
# dpkg -l|grep ecryptfs
ii ecryptfs-utils 92-0ubuntu1.1 ecryptfs cryptographic filesystem (utilities)
ii libecryptfs0 92-0ubuntu1.1 ecryptfs cryptographic filesystem (library)
This worked. Reproduced the bug in oneiric (evidently an infinite loop), the problem went away in -proposed. Normal ecryptfs operation (via ecryptfs- setup-private) also appears to be unaffected.
# dpkg -l|grep ecryptfs
ii ecryptfs-utils 92-0ubuntu1.1 ecryptfs cryptographic filesystem (utilities)
ii libecryptfs0 92-0ubuntu1.1 ecryptfs cryptographic filesystem (library)