Mac OS X 10.5.8 gets serious Wi-Fi bugs with latest update (May 2010).

Today I've decided to update my MacBook with the latest updates from 10.5.8, because it warned me in the last few days that updates are available. I know that it was the iTunes 9.1.1, a security update, and another one, which I can't remember exactly. I'm not sure if it wasn't the AirPort Base Station, which appears to be last updated on 31st of March ( I think it wasn't this because it's too early). But this doesn't matter now.

Everything worked fine, my Mac has been successfully updated, but after the first boot, the problems started. Mac OS X 10.5.8 is sometimes completely unable to communicate with my router via Wi-Fi (Asus WL 520-GU), which is my default internet gateway. Communication with my secondary router works (this is actually an Asus WL 520-GC, not GU), but it is useless since I can't access the internet at all (the secondary router is used to amplify the signal).

An temporary solution is to turn off the AirPort and start it again, but I can't do this again and again, every 15-20 minutes. I've surfed the internet and I found that a problem like this was occurred on the previous year, somewhere in September, again, after an update.

I'm now afraid that it will take a while until Apple will fix this, because they are now concentrating on the iPad/iPhone HD/4G/ iPhone OS 4.0, and I have the sensation that Mac OS X is currently not a priority for them. I hope I'm wrong.

If you have the same issues, please don't hesitate to leave a comment to let me know I'm not the only one having these issues !