Dropping N Network after 10.5.2

I'm having the same problem. What is the airport hardware information in your system profiler?
This is mine:

AirPort Card Information:

Wireless Card Type: AirPort Extreme (0x14E4, 0x87)
Wireless Card Locale: USA
Wireless Card Firmware Version: Broadcom BCM43xx 1.0 (4.170.46.3)

Having the exact same problem. Have an Intel iMac connected to a AEBS w/WPA and the connection will randomly drop. I can connect right back up, but have to do it manually.

This really screws up our Apple TV, which is streaming from the iTunes library on the iMac.

Had NO problems with 10.5.1. Nothing but problems with 10.5.2. I am getting close to doing a complete reinstall of the OS and staying at 10.5.1.

Come on Apple, we expect more than this...

What's your airport card info in system profiler?

I have 1st gen Macbook Pro with a Mac Pro 802.11n wireless network card and I also connect to an AEBS N using WPA. And after sometimes (maybe 5-10 mins after boot) my wireless connection drops and I have to turn the wireless connection off and on to be able to reconnect to my AEBS. It seems to drop when there's a lot of activity on the wireless interface (ie: TM backup on the AEBS external HDD). Also, once the connection dropped while a remote disk is mounted, it's impossible to mount it again without a reboot.

I never had any problem before, and the problem began right after I installed 10.5.2

Message was edited by: Eric Landry

Yea i wanna say its a problem specific to that particular card.... my roommate has a new macbook pro and his airport card has a different hardware identifier and he has no problems connecting to the aebs

It's not just 802.11n that drops. My AEBS was stolen a couple weeks ago, so I've been using a cheap WRT54G, which is only 802.11g. Ever since the 10.5.2 update, my wireless is dropping multiple times per day, sometimes just 15 minutes apart (approximate).

Info for my Mac Pro's AirPort Card...
Wireless Card Type: AirPort Extreme (0x14E4, 0x87)
Wireless Card Locale: USA
Wireless Card Firmware Version: Broadcom BCM43xx 1.0 (4.170.46.3)

I've got no problems, and I was wondering if anyone without the Broadcom wireless card was having problems connecting. My wireless card built into my MBP, Santa Rosa platform is an Atheros chipset, here are the details:

Airport Extreme (0x168C, 0x87)
Firmware 1.3.2
Channel: 36

I was having this same problem after updating to 10.5.2 and I finally think that I fixed the problem. I've had uninterrupted wireless connectivity for 48 hours now.

First, in my Keychain, the password to the wireless network was stored in two places, for "login" and "System". Login was fine but System was hashed up. I re-entered the password correctly into "System" and then did a basic repair on the Keychain. I don't know if this helped or it's extraneous, I'm just trying to record all information.

Then I went into my Airport configuration (I have first-gen, N AE). We'd been operating in "802.11n, A-compatible" mode because one of my housemates has a first-gen Macbook and we didn't want to lose N LAN speeds. Unfortunately, in this mode, you can't set your channel to anything but automatic. I changed the mode to "802.11n, b/g-compatible", set the channel to something specific, then changed my security protocol from "WPA/WPA2 Personal" to simply "WPA2 Personal".

That's it, no problems since.

Actually. I can pinpoint the step that solved the issue for you. Setting the network down to b/g compatible. I can do that keeping everything else the same on my system and I get no drop outs. But the 802.11 n only (5ghz) I've been using is perceptibly faster, so I am loath to change that setting. 😟

I'll hypothesise that it's not an 802.11 problem, it's a driver problem. Twiddling with wifi authentication probably doesn't help, but the resultant bounce of the interface probably does.

Why do I say this? Well, the Airport in my iMac is a Broadcom, and I'm not using any encryption at all; I live in the sticks where MAC filtering is sufficient.

The WLAN connection is appallingly flaky in OS X 10.5.2; I reverted to 10.5.1, which works.

Thank's, A. McCollister!

The issue here was the No-DHCP thing while the connection was shown as "connected". I just deleted /both/ Keychain entries, that from login /and/ from system, logged into airport again - et voila!

Looks good now, hope it stays.

Kind regards, Kai

Me too.
My hardware is Broadcom BCM43xx 1.0 (4.170.46.3)

I am seeing regular (daily) brief dropped network connections.
Something got broke with 10.5.2

"Me too." Since updating my iMac to 10.5.2 my wireless connection drops randomly throughout the day. My base station is an AEBSn (gigabit ethernet). I had no connectivity issues under 10.5.1.


*AirPort Card Information:*

Wireless Card Type: AirPort Extreme (0x14E4, 0x87)
Wireless Card Locale: USA
Wireless Card Firmware Version: Broadcom BCM43xx 1.0 (4.170.46.3)

Message was edited by: iBradly

Wow, another Broadcom chipset issue, anyone else starting to see a pattern?