Update Problem with Digital Signature

[Net-Monkey]

It keeps showing this message:
The digital signature for this package is incorrect. The package may have been tampered with or corrupted since being signed by “Apple”.

can anyone help me? I tried to download the update myself, but it says the code is not correct. Thank you

 

[mad jew]

Which update are you talking about and where did you get it? Tell us a little more information so hopefully we'll be able to help you.

 

[Net-Monkey]

It's the Airport Base Update 2007-002 & Macbook Pro Software Update 1.1
I tried to downlaod from apple's site myself but the same problem occurs.............THE WHOLE LAST WEEK
but just now I tried once again, everything goes fine
Strange problem, anyone have an explanation for this?
I've been googling for some days and find that there are cases same as me