Any idea why i get constant "sim failure" messages and a shutdown?

Question

I am getting constant Sim Failure messages during itube video playing, resulting in shutdowns. Any ideas why and a solution?

Answer 1

Brett,
Well done getting the wireless network secured.
You have to precede the (hex) password with a '$' in Mac OS, to tell the Internet Connect dialog box that you are keying a hex password (rather than ASCII). This is because the Mac has detected that the network is WEP protected, and leaves it to you to decide how you want to key the password.
As an alternative, in Internet Connect (or from the AirPort icon menu), you can elect to join an "Other" network. If you select your network again, it'll come up with "WEP Password" as the option of Wireless Security. You can change this to "WEP 40/128-bit hex" and then not have to precede your password with the '$'.
Alternatively, you could tell us the make and model of your wireless router and we can tell you how to set, and use an ASCII password. From your 10-character hex password, we can see that you're using 40/64-bit WEP. Non-Apple routers can be a bit fussy when using ASCII passwords with 40-bit WEP (don't worry, this is also true for Windows PC's using 40-bit WEP too), but we can talk you through it.
As a final alternative, as you have such a whizzy Mac, as long as your wireless router supports it, you could use WPA security, and never have to worry about ASCII / hex / '$', etc. Older Macs (particularly original AirPort cards - not AirPort Extreme - and OS9) were limited to 40-bit WEP.