I have a WBR2310 and have no issues with the hardwired computer. The MacBook that uses wireless struggles hard. Disconnecting and reconnecting the wireless connection seems to solve the issue, however, it is ANNOYING.
The WBR2310 doesn't have a great rating on Amazon and some suggest the problem lies in the 2 last firmware updates.
http://www.fixya.com/support/t1369399-d_link_wbr_2310_serious_drop_out
The following link suggests that downgrading to firmware 1.0.3 for the WBR2310 solves the issue. I am going to attempt this tonight.
Would be great if someone from D-Link could respond to this.
PS. Hey D-Link, you should put your company name in your Spell Check feature
