This blog didn't receive any updates for quite a while. That's both because I was too busy at Yandex and because there were no interesting bugs to blog about. I no longer work at Yandex. There was no single big reason for this decision, just a lot of small issues that accumulated and that don't apply to anyone else.
Now I work for a different company (won't name it here, it is nether SEO nor Google) as a senior developer of a web service. The most pleasant result of the job change is that now I feel more like a developer: write mostly C code, not bash scripts, and can even make architectural decisions.