The behavior has not changed . . . when you are viewing threads, the similar topics stay at the bottom. When you go to post, it is going to "pop" the similar topics so that you actually have to look at them before posting.
I will reduce the size of the box to see if that helps . . .
Intel i7 950 @ 3.9 GHz
MSI 560 Ti Twin Frozr x2 SLI @ 950 mhz
6 GB of Corsair memory (timings unknown atm)
H50 CPU cooler
3dMark11 P7800 at stock speed, P8643