I've been having tremendous problems with Gmail since updating to Mavericks. Hopefully this new update will address these issues.

The update provides the following:
Improved support for Gmail in OS X Mail, and fixes for users with custom Gmail settings
Improves the reliability of Smart Mailboxes and search in Mail
Fixes an issue that prevented contact groups from working properly in Mail
Resolves an issue that prevented VoiceOver from speaking sentences that contain emoji
Fixes an issue that prevented iLife and iWork apps from updating on non-English systems
Addresses an issue that may cause multiple prompts to unlock “Local items” keychain
Addresses an issue that may cause Japanese keyboards to retain a previously used language
Includes Safari 7.0.1

[support.apple.com...]