Attachment_fu help? broken pipe?

Hello,
Weird problem I am experiencing. I can upload files to my s3 account,
but maybe after 4 times, my rails app starts to no longer upload. If i
killall -user dispatch.fcgi, I can upload again for a few times before
it stops. any ideas?

here is my prod.log

EOFError (end of file reached):
/usr/local/lib/ruby/1.8/net/protocol.rb:133:in sysread' /usr/local/lib/ruby/1.8/net/protocol.rb:133:inrbuf_fill’
/usr/local/lib/ruby/1.8/timeout.rb:56:in timeout' /usr/local/lib/ruby/1.8/timeout.rb:76:intimeout’
/usr/local/lib/ruby/1.8/net/protocol.rb:132:in rbuf_fill' /usr/local/lib/ruby/1.8/net/protocol.rb:116:inreaduntil’
/usr/local/lib/ruby/1.8/net/protocol.rb:126:in readline' /usr/local/lib/ruby/1.8/net/http.rb:2017:inread_status_line’
/usr/local/lib/ruby/1.8/net/http.rb:2006:in `read_new’

and after the first crash, i get a new one"

Errno::EPIPE (Broken pipe):
/usr/local/lib/ruby/1.8/net/protocol.rb:175:in write' /usr/local/lib/ruby/1.8/net/protocol.rb:175:inwrite0’
/usr/local/lib/ruby/1.8/net/protocol.rb:151:in write' /usr/local/lib/ruby/1.8/net/protocol.rb:166:inwriting’
/usr/local/lib/ruby/1.8/net/protocol.rb:150:in write' /usr/local/lib/ruby/1.8/net/http.rb:1571:inwrite_header’
/usr/local/lib/ruby/1.8/net/http.rb:1536:in send_request_with_body' /usr/local/lib/ruby/1.8/net/http.rb:1522:inexec’
/usr/local/lib/ruby/1.8/net/http.rb:1045:in request' /vendor/plugins/aws-s3-0.3.0/lib/aws/s3/connection.rb:41:inrequest’
/vendor/plugins/aws-s3-0.3.0/lib/aws/s3/connection.rb:46:in call' /vendor/plugins/aws-s3-0.3.0/lib/aws/s3/connection.rb:46:inrequest’
/vendor/plugins/aws-s3-0.3.0/lib/aws/s3/base.rb:69:in request' /vendor/plugins/aws-s3-0.3.0/lib/aws/s3/base.rb:84:input’
/vendor/plugins/aws-s3-0.3.0/lib/aws/s3/object.rb:239:in store' /vendor/plugins/attachment_fu/lib/technoweenie/attachment_fu/backends/s3_backend.rb:294:insave_to_storage’
/vendor/plugins/attachment_fu/lib/technoweenie/attachment_fu.rb:369:in
after_process_attachment' /usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/callbacks.rb:333:insend’
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/callbacks.rb:333:in
callback' /usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/callbacks.rb:330:ineach’
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/callbacks.rb:330:in
callback' /usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/callbacks.rb:243:increate_or_update’
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/base.rb:1551:in
save_without_validation!' /usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/validations.rb:762:insave_without_transactions!’
/usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/transactions.rb:133:in
save!' /usr/local/lib/ruby/gems/1.8/gems/activerecord-1.15.3/lib/active_record/connection_adapters/abstract/database_statements.rb:59:intransaction’