Remove the /Users/<my-username>/LIbrary/Application Support/Google directory and re-install Google Drive.

Google Apps has some of the best spam & virus blocking technology around integrated into Google Apps.

Messages Google believes may be spam are delivered to a folder (well, a label) called "Spam". Messages remaining in this folder for more than 30 days are automatically deleted.

Google will learn what you consider spam.  Use the "Report spam" and "Not spam" buttons to train Google spam filters.

Google uses labels rather than folders and although they look similar, they have distinct differences.  Remember, you always only have 1 copy of any email in your inbox.  If you want to organize your inbox into different views, you can apply labels to specific groups of messages.  Labels can be created, edited and deleted.  

Note: Labels are different from folders. If you delete a message, it will be erased from every label that it’s attached to and your entire inbox.  If you want to remove an email from a 'folder', you would remove the label on that email.

Open a message in Connect/Google Apps and click More -> Create Event in the menu bar to create a calendar event based on that message. All the people addressed in your email are listed as invitees, and your email content is included in the event description. Set the event time and date, or click Find a Time in the middle of the screen, to see the schedules of all the invitees.

Want to unsend an email message? Add a graphic to an email? How about hiding early morning and evening hours on your calendar? These and many other special functions are previewed in 'Labs' -- Google’s testing ground for experimental features. Warning: Lab features are not as fully tested as the standard features and may cause incompatibilities. Click Settings -> Labs to see a list of recently developed functions, then click Enable to add them to your email or calendar (remember to click 'Save changes' at the bottom of the list).