Missing zlib extensions on Ubuntu
I have a Wordpress install on a 512Mb Ubuntu 14.04 x32 which is working fine 95% of the time, however I occasionally get this error when both browsing and working in the Admin panel:
Abort class-pclzip.php : Missing zlib extensions
Can anyone help me identify what this might be? My guesses at this stage are pointed towards a plugin dependency, or php extensions but I want to confirm before playing with the config.