1. Bouncing Billy Mac Oscar

If your Mac is connected to the internet but suddenly stops sending or receiving email, you should generally try again later, and if necessary work with your email provider to resolve. If you're using Apple's iCloud Mail, learn how to resolve issues with iCloud Mail.

Start your Mac in Safe Mode. This troubleshooting startup environment restricts most startup items. It also limits the operating system to use only the basic OS core. If you can start the Mac in Safe Mode and then use the app in question, the likely cause is not permissions or preference files. Title Developer/publisher Release date Genre License Mac OS versions A-10 Attack! Parsoft Interactive 1995 Flight simulator Abandonware 7.5–9.2.2. A prohibitory symbol, which looks like a circle with a line or slash through it, means that your startup disk contains a Mac operating system, but it's not a version or build of macOS that your Mac can use. Press and hold the power button on your Mac for up to 10 seconds, until your Mac turns off.

Check for status messages

You might see a status icon such as a lightning bolt or a warning icon next to your account's inbox in the Mail sidebar, or in the upper-right corner of the Mail window. Click it to learn more.

• If the status is Network Offline, make sure that your Mac is connected to the internet, then try again.
• If the status is Login Failed, check with your email service provider (ESP) to be sure that your account is set up correctly on your Mac.
• If Mail asks for your password, but entering the password doesn't help, find out why your email provider is rejecting your password.
• If your email service is experiencing a temporary outage, your email provider might have a status message on their website. For example, Apple's system status page shows the status of iCloud Mail. Status pages are also available for other email services, such as Gmail and Outlook. Some brief service outages might not appear on a system status page, so you might want to wait a few hours and try again.

Test using webmail

Many email providers offer webmail, which is a way to use email with a web browser such as Safari, instead of with an email app such as Mail. For example, if you're using an iCloud Mail account, you can use iCloud.com to send and receive email.

Webmail is a good way to verify that your account is valid, but it doesn't mean that your account is set up correctly in Mail. Your email provider can help you verify your email settings and check for other issues that affect sending or receiving email.

Remove your account, then add it back

If no other solutions work, try setting up your email account again. To do that, remove your email account, then add the account back.

Bouncing Billy Mac Oscar

I have a problem with my MacBook with applications 'bouncing' in the dock and not opening. I took the macbook into the genius store and they said it wasn't a permissions issue they thought it was some 3rd party programme I have loaded.
I have loaded Snow Leopard onto both my iMac and Macbook, the same apps work fine on the iMac but on my MacBook i am having to reinstall nearly all my apps to get them to work.The problem started a few weeks ago with leopard and I was hoping that with Snow Leopard it would sort it but as I used Time Machine to import all my data after upgrading I seem to have brought the problem into Snow Leopard.
The only thing I have done around the time this started happening that I can think of is that I downloaded one of those programmes that help free up space on the mac by deleting all unnecessary languages (I just need British English) . could taking languages off interfere with so many apps?