Hi Kevin,
The dedicated webserver what Henrik's (and my) site are hosted on use as PHP a plain install of PHP 5.3.6 installed from source, with GD installed of cource. Its installed totally "outside" of PLESK and PLESK do not update things like PHP,Apache etc. The fact PLESK is else a mess is then an another story

What happened was that only Henrik's multigraph stopped working, all other graphs using JpGraph seemed woking fine and now i see Henrik got it working again with updating JpGraph so must be something in older version of JpGraph what caused it

Henkka