I can confirm i have the same problem -- makes me glad I keep my old kernels around just for things like this.
Oddly enough, i noticed the following behaviour:
If i boot into 18.104.22.168-pclos1.a64, get the network up on the wifi, then reboot into the 33.7, it will connect etc no problem.
However, in the WICD Manager (i find it a bit faster than the PCC based one personaly) i have to change my wlan0 to wlan2 or wlan3, oddly, and the networks do not show up AT ALL in drakroam.
If i reboot from here, the wifi will either try to come up, many times per second, causing the wifi light to flash rapidly, or it will act like the device does not exist at all.
I'd post details, but I didn't bother to copy-paste the dmesg/modprobe errors from last time lol
Oh, here is my wifi card from lspci (i forgot to check that under the other kernel, will do next time i reboot)
05:00.0 Network controller: Broadcom Corporation BCM4311 802.11b/g WLAN (rev 01)