Clear Recently Visited Website History In Chrome , firefox

As you browse the web, Firefox helpfully remembers lots of information for you – sites you've visited, files you've downloaded and more. All of this information is called your history. However, if you are using a public computer or share a computer with someone, you may not want others to be able to see these kinds of things.
This article explains what information is stored in your history and gives you step-by-step ways to clear all of part of it. To temporarily have Firefox not store any history, see Private Browsing.

How do I make Firefox clear my history automatically?

If you need to clear your history every time you use Firefox, you can set it to happen automatically on exit so you don’t forget.

1. At the top of the Firefox window, click on the Firefox button (Tools menu in Windows XP) and then click Options
2. Select the Privacy panel.
   
3. Set Firefox will: to Use custom settings for history.
4. Check the box for Clear history when Firefox closes.
5. To specify what types of history should be cleared, click the Settings... button next to Clear history when Firefox closes.
6. In the Settings for Clearing History window, check the items that you want to have cleared automatically each time you quit Firefox.
   
7. After selecting the history to be cleared, click OK to close the Settings for Clearing History window.
8. Click OK to close the Options window

Google Chrome

To delete history on one button click

to clear your history, you can bring up the "Clear Browsing Data" window by hitting Ctrl + Shift + Delete. If you want to take the scenic route, go to Tools > Options > Under the Hood > Clear browsing data.

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Apple iOS: Troubleshooting Wi-Fi networks and connections

Symptoms

When using a Wi-Fi network with your iPhone, iPad, or iPod touch, you may occasionally encounter the following issues:

Unable to locate or join a nearby Wi-Fi network
Weak or low Wi-Fi signal strength
Connected to Wi-Fi network, but unable to access the Internet

This article outlines basic troubleshooting tips and techniques for Wi-Fi on your iOS device. For information on enabling or configuring a Wi-Fi connection, see the User Guide for your product.

Note: iOS devices sold in China may use the term Wireless LAN (WLAN) instead of Wi-Fi. Not all China iPhone models support WLAN; see this article for more information.
Products Affected

iPhone, iPad, iPod touch
Resolution

Many Wi-Fi issues can be resolved by doing the following:
Basic troubleshooting

Tap Settings > Wi-Fi and turn Wi-Fi off and then on again.
Verify that you are in range of your Wi-Fi router or base station.
Confirm that your Wi-Fi router and Cable/DSL modem are connected to power and turned on.
Check whether other devices (portable computers, for example) are able to connect to the Wi-Fi network and access the Internet.
Update your Wi-Fi router to the latest firmware.
For AirPort Base Stations, refer to this article for information about firmware updates. For third-party Wi-Fi routers, check the manufacturer's website for details on updating your firmware.
Restart your iOS device
Hold the On/Off button until "slide to power off" appears. Slide to power off your device. When it is off, press the On/Off button to turn it back on.

If you are still experiencing a Wi-Fi issue after trying the above, choose the symptom below that closely matches your issue:
If you're unable to locate or join a nearby Wi-Fi network
After joining a Wi-Fi network, you notice the signal strength is weak or fluctuates
If you are unable to access the Internet while connected to a Wi-Fi network
Additional Information

If you are using a Wi-Fi router at home, refer to your user manual/documentation to assist you with some of these suggestions.

Check the manufacturer's website for firmware or software updates for your Wi-Fi router.
Check the wireless security option of your Wi-Fi router:
If you are using WEP security and have multiple WEP keys on your Wi-Fi router, try configuring your Wi-Fi router to use only a single WEP key in key index 1.
Consider using WPA or WPA2 instead. WPA and WPA2 encryption protocols are newer, more effective security options for wireless networks than the older WEP protocol.
Temporarily disable wireless encryption or security on the Wi-Fi router to rule out encryption issues.
Disable 40MHz in the 2.4GHz settings on the Wi-Fi router. Mac computers, iPhone, iPad, and iPod touch do not support this mode. Disabling it may reduce interference issues.
Supported Wi-Fi networks vary by iPhone, iPad, iPod touch model (Example: Does my device support 802.11n?). Refer to Tech Specs for detailed information on which standards your device supports.