I introduced a wireless ethernet bridge to my WPA protected wireless network, which was supposedly meant to support WPA, except it didn't. Which meant I had to convert my network security, and everything attached to it, to WEP. The bridge appeared to work with WEP. Only problem was my Airport Express stopped working! The answer was to preceed the security key (hex code, not passphrase) with a dollar sign "$" in the Airport's configuration app.

I tried installing Checkpoint's Secure Client on my PowerBook (runnning Mac OS X 10.4) but it wouldn't install - it appears from looking at the installation log that the current version of Secure Client for Mac OS X won't install on anything newer then 10.3. I read on some forums (I forget where) that the Secure Client guys are working on a patch - but no date has been set as yet.