Upgrading to 10.5.5 breaks wifi?

Hi guys,
First off, sorry to create another post about wifi issues.
I just switched to a Mac earlier this month and absolutely love it. My only gripe is that the wireless capability of my macbook pro appears to be having some issues when I update from 10.5.2 to 10.5.5.
I dare to say so because some how the "symtoms" (erratic signal strength and disconnects) I am experiencing are very much similar to thousands of mac users and only happens after I updated to 10.5.5 through the apple software update. I was able to update using my wireless network! I have since re-installed using the bundled software discs and reverted to 10.5.2 and I have had no problems what so ever.
I have not applied all available apple updates except for 10.5.5 and still have no problems. I am now tempted to try to apply 10.5.5 update to see if the "symtoms" return.
Can someone comment if they have had wifi issues since 10.5.5?
Zed over and out!
Message was edited by: SwitcherZed

I have a new iMac and new TimeCapsule. Things were running OK'ish until I upgraded to 10.5.5 when network access started to deteriorate in an unpredictable fashion. The network would slow, and grind to a halt at times. Signal strength would vary markedly. At first I suspected the TimeCapsule and I had this replaced. the problem persisted. I bought a new MacBook Pro (I needed to transfer machines anyway) and after a brief honeymoon period of a day the problem returned. I trawled the internet and followed the tip to delete /Library/Preferences/System Configuration and indeed that would provide temporary relief but not for long.
The new MacBook Pro was installed and had the settings transferred from the old iMac. The TimeCapsule has been reset to factory settings. This has cost me days of work time.
There are countless reports of 10.5 WifI problems. Why have Apple not publicly acknowledged this and at least provided us with some reassurance that this is being addressed?

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    Greetings all,
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