So...
After I spawned, I automatically spotted that sometimes You turn to walk from running even without your agreement. I'm using always run option, so it shouldn't appear. At first I tought that It's just because server is busy, but it didn't change. Later Armor Class bar and INV stats started blinking. 5 reconnects did nothing. And I died also, because of walk-turning. 600-800caps-worth EQ is now gone, but the bug is much more important.