amateescu/search_api_solr — pull request #30 by Berdir (2014-10-24 14:04:35+00:00)
Title: Use state for the last_optimize value.

Using config for this kind of data is wrong and it was broken because it didn't call save.

I think there is more similar stuff in the module right now, where it is changing config on a regular basis, but that can be fixed separately.