When you look at their server status page ( http://dg.imp.kiev.ua/slinca/server_status.php ) , you can see that the feeder is down. When it is down, you cannot get work. The work generator (not shown) provides WUs to the feeder. The feeder provides those WUs to the scheduler via shared memory (faster than checking the database). The scheduler provides them to your host, and if the upload/download service is running you can send or receive WUs. When any of those are not up and running, there will either be a lack of work or no work. About the only ones crunchers don't care about are the file_deleted and db_purge. Everything else affects downloading work, returning work, and getting credit for work.

My suggestion is to make a post on the project's message board. Maybe they monitor that better than the BOINC server processes -- and/or send them a PM as that will probably also notify them via email.