I installed 10.4.10 on my powerbook from home last night and all was well. This morning (June 21st) I am trying to install on the iMac in my office. I get the following message:
The update "Mac OS X Update (Intel)" can't be installed.
The digital signature for this package is incorrect. The package may have been tampered with or corrupted since being signed by “Apple”.
Has anyone else seen this? In both cases I'm updating from 10.4.9 using Software Update as usual.