DashboardClient quit unexpectedly, after Monday's update

Question

I applied Monday's update and now my computer starts with a windowed message:
"The application DashboardClient quit unexpectedly. Mac OS X and other applications are not affected." Then it encourages me to send a report to Apple.
This situation just popped up on me today (Tuesday), after having installed the update yesterday and not having restarted the computer a couple of times right after updating.
Now, I lost one of my Dashboard-connected widgets (I had two on the desktop). Also gone are apps icons on my desktop, as well as the Apple, which I use to turn off the computer.
To get the Apple back, I have to start System Preferences, or probably any other program ( I haven't checked this out as deeply as I should).
All I now see is the gray desktop.
Roxy

Answer 1

I lost all of my connected widgets (7) and no more working widgets!
Starting the DashboardClient (F12 or mouse buttom) a message prompt on the back of the dark gray dashboard desktop.
"The application DashboardClient quit unexpectedly" ....ending with the 'Send to Apple' of a report.
In the rapport is a line "Exception Type: EXCBADACCESS (SIGSEGV)" - is this significant?
The DashboardClient and wigets are unusable now.
So, I did look around and trashed 2 files under my Users/gpc5000/Library/Preferences >>> 1) com.apple.dashboard.plist
2) com.apple.dashboard.client.plist
After this I rebooted the system. (several times with the same result)
A initial screen apeared under the DashboardClient with 4 blanc widgets. One of them provoced again the same 'unexpected quit...'
The problem started when I downloaded several (20) Widgets from the www.apple.com/download/widgets browser/ ....
I Also did allow 5 new update runs reboot included
On the discussions board were a few suggestions:
1) repair permissions >>> but this was 1 bridge 2 far. (?!)
2) use of du >>> still 2 far (?!)
I looked via the therminal at: /System/Library/CoreServices/Dock.app/Contents/Resources/DashboardClient.app/Co ntents/MacOS/DashboardClient
imac-van-gpc5000:MacOS gpc5000$ ls -all
total 504
drwxr-xr-x 3 root wheel 102 7 jui 02:16 .
drwxr-xr-x 8 root wheel 272 7 jui 02:16 ..
-rwxr-xr-x 1 root wheel 255536 7 jui 02:12 DashboardClient
imac-van-gpc5000:Contents gpc5000$ du
504 ./MacOS
248 ./Resources
784 .
So what can we do?
Thankx4 T help, greetz, gpc5000. (dummy of X)