Nope it has not worked in months for me but I found a work around, go to my discussions select view all then select the posts you wish to delete and check mark them then go to bottom of page and click on remove from my discussions.
what goes around comes around
(RIG)GA-EP45-UD3P, Q9550 @ 3.5 ghz, CM's V8, HD2600XT512mb 128bit, 4gigs OCZ 1066 ddr2, Seagate sata 120 gig & a 320 gig, 2 Liteon sata DVD Burner, My DIY Case, Corsair 550watt PSU, 2ea 19" LCD monitors.