On quite a few of the threads today, when I click on them, instead of the contents of the thread I instead get this message:
SQL ERROR [ mysqli ]
Out of memory; check if mysqld or some other process uses all available memory; if not, you may have to use 'ulimit' to allow mysqld to use more memory or you can add more swap space 
An sql error occurred while fetching this page. Please contact an administrator if this problem persists.
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This is true of the Issues & Bugs thread (actually, most but not all threads in the "Unilang - Information, Input, and Questions" section), and seemingly random other threads, such as the "Livonian
" thread in the Uralic forum (but not the rest of the Uralic forum).
Weirdly, I can open and read the posts in any of these threads if I am not logged in. But as soon as I log in, if I click on those threads I get the message I quoted above (which also means that I cannot reply to them, since I cannot open them when I am logged in.)
I realize I'm replying to a really old post and this is sort of the wrong place for it, but I was unable to post it in the Issues and Bugs thread because of this very issue. This is one of the few threads in the Informatoin/Input/Questions subforum that I can actually open and post to while logged on. I hope it gets found here. I did see the posts about server migration and debugging; I'm not sure if this problem part of that (probably? such a weird coincidence with the timing if not). I can certainly be patient if it's a known issue that is going to be fixed later, but I wasn't sure if you were aware of it.