Debian 8, KDE Lockup

[Tim McDonough]

I have a new installation of Debian 8 and the KDE Desktop that isn't 
working. As the system boots it asks for user and password then as the 
KDE startup icons appear in a box in the middle it always locks up once 
the third one appears.

I have additional memory on order but presently the system has just 1GB 
of RAM. Is this the likely source of my problem?

Tim