s3 / php script looping (strace)

Question

Anyone using the following php S3 client library?

http://undesigned.org.za/2007/10/22/amazon-s3-php-class

It's been working fine for me for a few days, just noticed that a script I have in place now just ends up hanging.

Running this through strace, I see something like:

poll([{fd=4, events=POLLOUT}], 1, 1000) = 1 ([{fd=4, revents=POLLHUP}])
poll([{fd=4, events=POLLOUT}], 1, 0)    = 1 ([{fd=4, revents=POLLHUP}])
poll([{fd=4, events=POLLOUT}], 1, 1000) = 1 ([{fd=4, revents=POLLHUP}])
poll([{fd=4, events=POLLOUT}], 1, 0)    = 1 ([{fd=4, revents=POLLHUP}])
poll([{fd=4, events=POLLOUT}], 1, 1000) = 1 ([{fd=4, revents=POLLHUP}])

Looking at what's running, I see that it's not even getting to the point where it makes the curl call.

Any thoughts?

Thanks!