ICal weird dock icon after 10.7.2 update

Question

Hello,
I updated yesterday to 10.7.2 and since then, iCal is showing one weird icon in the dock, when it is not running.
It looks like a trabsparent image with the current date in the middle in black.
When iCal is running, it shows then its normal icon as expected.
I am using a macbook pro mid2009, 2,53MHz, if that matters.
I removed and added back the icon to the dock, but the bahaviour still persists.
Any ideas how to solve this issue?

Answer 1

I've got the exact same problem, MacBook Pro 4,1 here. As you can see it's really tricky to see on a dark background:
Running the app makes this go back to normal...but only when the app is running. Note that the icon also looks like this in Launchpad.
I've looked through various forums and have tried all of these proposed solutions (evidently this is a common occurrance in previous iCal updates):
Trash Dock preference file
Trash iCal preference files (all of them)
Trash iCal Caches data
Repair drive permissions
Reboot
Pull icon out of dock and re-add it
None of those, except the first one, do anything. The first one "fixes" it briefly as it resets the Dock to defaults. This causes iCal to revert to the default icon all the way up to the point that whatever process goes in, grabs the current date, and alters the icon to show the current date. Whatever that process is, it's the one with the corrupted or missing icon graphics. If any one knows anything about what updates the iCal icon to show the current date, that would be the first step to fixing this.
Anyone else feel like Lion has been the buggiest OS X release thus far? Granted, I didn't use 10.0 or 10.1.