Depending on where the compass is located on the surface of the Earth the angle between true north and magnetic north, called magnetic declination can vary widely with geographic location. The local magnetic declination is given on most maps, to allow the map to be oriented with a compass parallel to true north.
2] KB2939087 recommends in case you are unable to install the Windows 8.1 Update package KB2919355 via Windows Update, then you should download and install the package manually. 3] If you receive Error 0x80071a91 when installing KB2919355 on Windows 8.1, Microsoft has released a patch to fix this issue.t should therefore first be installed on your system before your attempt to install Windows 8.1 Update or KB2919355. Go get it here if your computer does not have it. 1] If your Windows 8.1 Update has failed to installed, you need to clean up the corrupted installation.
Annoying Java update message. I've recently bought a new Windows 7 computer, and every two days or so I've been getting a message shortly after bootup that a new version of Java is available to be installed.As I don't use Java, I ignored it the first few times, but eventually I gave in and allowed it to install itself. checked the installed program list in the Control Panel and it's showing that I have the following two Java versions installed: Java(TM) 6 Update 14 (64-bit) V6.0.140. Java(TM) 6 Update 17 V6.0.170. I assume the second one must be a 32-bit version as it doesn't state that it's 64-bit.