id summary reporter owner description type status component version resolution keywords cc guest host 10543 VERR_VMM_RING0_ASSERTION (VMMRZCallRing3: enmOperation=9) E1 "I have an intermittent fault with an Ubuntu 10.04 host with a windows SRV2003 Guest in terminal services mode. VBox is 4.1.6 r74727 . 16Gb RAM on Host. This Guest is the only one running on this host and the host does nothing else but run this server. Every now and again I get a halt error and switch to Guru_Meditation, exact fault is: Guru Meditation -2701 (VERR_VMM_RING0_ASSERTION) Have tried reducing RAM assigned to guest to 3500 from 3584, and enabling PAE in guest" defect closed other VirtualBox 4.1.6 obsolete r74727 Windows Linux