Here was my solution when I discovered resent changes to my keychain weren't being updated:
I was having difficulty with my agilekeychain not syncing the latest data changes. It's not a problem with Dropbox. Open 1Password>Preferences>Advanced and then Clear Cache. Uncheck using cache to prevent this from happening again (or simply remember to clear the cache).
[From 1password AgileKeyChain is not syncing « Dropbox Forums]
Here's a neat little trick that I haven't used much!
Leopard makes it easy to create a Dashboard widget from a segment of a web page. For example, you can capture a “new releases” list from a media website, or the “latest posts” field from an Internet discussion group. These Web Clips appear, automatically updated, whenever you open Dashboard.
Open Terminal and type:
defaults write com.apple.ScreenSharing DoNotSendSystemKeys -bool YES
To restore the old behavior, change the last word to "NO." You can also use a plist editor if you're scared of the Terminal.
If you prefer the 10.5 behavior, wherein special keys are never sent to the remote Mac, there is a solution. It requires Terminal (in Applications -> Utilities), but only for one command. Launch Terminal, then copy and paste the following line (while Screen Sharing is not active):
[From Don't send special keys in 10.6's Screen Sharing | Mac OS X | Mac OS X Hints | Macworld]
