D-Link DI-824VUP+ wireless problem

I have a D-Link DI-824VUP+ which causes me more than one headache for several months.

The problem was that sometimes my two Lenovo laptops, with 4965 and 5100 Intel wireless cards respectively, did not connect to the wireless network of my DI-824VUP+ device. I had to reboot the device and try to connect again and, in some cases, I got the connection to work.

I believed the problem was with Linux Intel wireless driver, which logged an "authenticated timout" problem, but after upgrading to different new kernels the problem remained the same.

So, finally I found out a firmware update in australian D-Link page http://www.dlink.com.au (entering in support section and choosing the model name). I have upgraded from 1.5 firmware to 1.6b, and the problem disappeared completely! The wireless connections of my two laptops have success all times, without rebooting DI-824VUP+ device.