My observium worked perfect for about a month. But yesterday i made an update (to rev. 4572):

#cd /opt/observium

#svn update

#./discovery.php -h none

After that i have next problem:

- in servers overview tab all graphs ok

- when i'm clicking for example on Memory Usage graph, all is ok. I can see graph for last 24 hours

- but when i'm clicking on Show legend/Graph previous/etc there is no graph

Thanks for your help, and sorry for my english.

--