Firefox does not start but HDD usage goes up to 100% on Windows 8.1 and blocks / freezes the computer

Today my firefox 33 did not start any more. In task manager the process was shown, but with memory = 0 and CPU = 0. But the HDD usage of my computer went up to 100% and it was fully blocked for everything else. Waiting for a couple of minutI es did not change anything, also rebooting did not help

How-I-fixed-it:
Since Internet Explorer since worked on the computer, i went to https://www.mozilla.org/de/firefox/new/ and installed the latest version of the firefox browser. After this, firefox worked fine again.

Outlook 2013 busy/freeze after startup because of OXtender 2, Start in safe mode

After startup, as soon as OXtender 2 started to sync with the server, my Outlook 2013 did not respond any more (Windows 8, 64 bit, Office 32 bit, OXtender 7.0.64).

How-I-fixed-it:
I managed to start Outlook in safe mode by pressing CRTL-Key on startup as described here:
http://office.microsoft.com/en-us/outlook-help/about-office-safe-mode-HP003082393.aspx

I disabled the OXtender 2 AddIn to check, if this is causing the problem. Without the AddIn, Outlook starts OK.
I did a backup of my data and then recreated the service again using the OXtender Support Tool (C:\Program Files (x86)\Open-Xchange\OXtender 2 for Microsoft Outlook\Profile).

After that, Outlook starts fine again and synchronized with the server.

Nokia Lumia 920 WP 8 locked up

Today, my Lumia 920 decided to freeze. It did not react to touch screen nor buttons.
How I fixed it: Press the Volume down and the power button for 5 seconds to soft reset the phone. I had to set date and time again after reboot.