40 sec freeze again

Just had the 40 second freeze again.

Windows 7 . i7. 8Gb RAM. RME Fireface 800.

MIDI-only project. Halion Sonic (11 instruments) and Aria Player (2 Instruments). Freeze occurred as I was inputting through MIDI from Kurzweil PC3x keyboard to the drum track. Screenshot link below.

http://www.laurencepayne.co.uk/show/cubase_freeze.JPG