Mail Issues since maverick upgrade

Question

Since upgrading to Mavericks I have been having the several issues with Mail. The are as follows:
Scrolling is available intermittently or not working at all (using Magic Mouse)
Problem: Scrolling works for a while when using mail, then stops working. I have to click on the side bar to go up and down on all scroll screction within mail. This issue only resolves when quitting Mail, and sometimes will only work again when shutting down and restarting my iMac.
Scrolling on folders withing the main body of my iMac also stop working from time to time and only resolves when force quitting finder, or restarting my mac (or somethime shutting down and restarting the mac).
Email address pull down menu does not close down
Problem: When typing an new email and selecting an outgoing address the pull down menu appears, but once an address is chosen using the mouse curser the pull down menu remains on screen and does not close down automatically. I can not close it with teh mouse curser and have to use the keyboard (return or tab buttins) to close down the drop down address menu. It used to close down prior to Maverick upgrade. The pull down menu remains on screen blocking access to the CC and Subject sections.
Saving Mail attachments to desktop folders does not work.
Problem: Saving attachements from mail does not work at all using the drop down menu within mail. The process of using the save attachments menu within mail seems to work, but when you go to the folder after using this process, the item or items have not been saved.
Click and drag is the only way to move attahcements from mail to desktop folders now.
Mail will not quit automatically when shutting down Imac
Problem: When shutting down my iMac, mail will no longer quit automatically and prevents the shut down. Once shut down has been selected, Mail will no longer quit and I have to use Force Quite to shut it down.
Would welcome suggestions on how to resolve these issue.

Answer 1

Please read this whole message before doing anything.
This procedure is a test, not a solution. Don’t be disappointed when you find that nothing has changed after you complete it.
Step 1
The purpose of this step is to determine whether the problem is localized to your user account.
Enable guest logins* and log in as Guest. Don't use the Safari-only “Guest User” login created by “Find My Mac.”
While logged in as Guest, you won’t have access to any of your personal files or settings. Applications will behave as if you were running them for the first time. Don’t be alarmed by this; it’s normal. If you need any passwords or other personal data in order to complete the test, memorize, print, or write them down before you begin.
Test while logged in as Guest. Same problem?
After testing, log out of the guest account and, in your own account, disable it if you wish. Any files you created in the guest account will be deleted automatically when you log out of it.
*Note: If you’ve activated “Find My Mac” or FileVault, then you can’t enable the Guest account. The “Guest User” login created by “Find My Mac” is not the same. Create a new account in which to test, and delete it, including its home folder, after testing.
Step 2
The purpose of this step is to determine whether the problem is caused by third-party system modifications that load automatically at startup or login, by a peripheral device, by a font conflict, or by corruption of certain system caches.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards. Boot in safe mode and log in to the account with the problem. Note: If FileVault is enabled on some models, or if a firmware password is set, or if the boot volume is a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to boot and run than normal, and some things won’t work at all, including sound output and Wi-Fi on certain models.  The next normal boot may also be somewhat slow.
The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin.
Test while in safe mode. Same problem?
After testing, reboot as usual (i.e., not in safe mode) and verify that you still have the problem. Post the results of steps 1 and 2.