This is my recent experience. On 10/15 I requested 2,000 HHonors Points. On 10/25 I requested another 1,000 HHonors Points. The 1,000 showed up in my Hilton account on 10/27 and the 2,000 were there today, 10/29. Go figure!!
By the way, I have had no problems with MyPoints either posting or redeeming points and my account has had no problems such as disabled, etc.