As reported inthe forum many times (one example) Using file based sessions on NFS mounted partitions can be very slow and result in Piwik not workig at all.
Often users stop using Piwik completely or miraculously find the FAQ explaining how to swtich to DB based sessions: http://piwik.org/faq/how-to-install/#faq_133
How could we reasonably work around these problems?
See also: #2997
see #2997