I'm running a multisite install with about 40 sites. Today when I went to upload a new plugin, I got an error message that memory has been exceeded.
I know that I can uncheck the memory limit for uploads in network settings, but this is unexplained, and I'm concerned about where this large number of files came from. Currently, I have uploads limited to 150MB, and I definitely have not gotten this upload limit error message before.
When I go to the dashboard of the main site (which I haven't been on for a while), it shows that I have exceeded that limit with 1,360.91MB uploaded. (This may explain my poor admin dash performance!) None of the other sub-sites are close to the 150MB limit.
This main site is small, and the total size of the uploads + blogs.dir files for this site is less than 20MB.
Should I be worried that I've been hacked? (A malware scan comes back with nothing.)
Any ideas about where those extra files could be found? Could there be some plugin creating files that are adding to this total? Any reason why such a large amount of files might need to be associated with the main site of the multisite?