After clicking to accept an invitation from a linkedin.com member, the entire system halts and becomes unresponsive. Only the mouse cursor moves around but it does it in a jumpy way. No other button or keyboard key responds.

Reproducible: Always

Steps to Reproduce:
1. Enter into linkedin.com
2. Click on the top-right icon, next to the icon to setup your account or logout.
3. A list of invitations appears. Click on the name of the inviter.
4. His data appears.  Then click on the button to accept his invitation.

Actual Results:  
The konqueror screen becomes clear and no information appears. Menus and task bar are visible but unresponsive. The moust pointer can be moved around but cannot activate any button on the screen. Keyboard becomes unresponsive also.
The only way I could figure to get back in track was to shut down the laptop using the on/off switch. I kept the button pressed until the laptop shutdown completely. Then restarted the system and everything seemed fine. Did it four times with different invitations and the same results.

Expected Results:  
I expected konqueror to display the page that followed.

I did not loose any information or files or data.  Just the entire system became unresponsive.  Had I had any open unsaved documents, I would have lost them though since I became unable to save them after konqueror froze.

I am using Debian 8