vbox求帮助

li295258993

我现在在管理公司网站，但是以前没弄过vbox，最近服务器老是出现问题，大概每隔5-7天，vbox就会自动关闭，各位大神，这是怎么回事。主要是看不懂日志文件，附上最新一段log，求解
VirtualBox 4.1.20 r80170 win.amd64 (Aug 20 2012 17:20:42) release log
00:00:01.013 Log opened 2013-03-27T00:49:40.814313200Z
00:00:01.013 OS Product: Windows 7
00:00:01.013 OS Release: 6.1.7601
00:00:01.013 OS Service Pack: 1
00:00:01.013 Host RAM: 4095MB RAM, available: 3256MB
00:00:01.013 Executable: C:\Program Files\Oracle\VirtualBox\VirtualBox.exe
00:00:01.013 Process ID: 2804
00:00:01.013 Package type: WINDOWS_64BITS_GENERIC
00:00:01.013 Installed Extension Packs:
00:00:01.013   None installed!
00:00:01.108 SUP: Loaded VMMR0.r0 (C:\Program Files\Oracle\VirtualBox\VMMR0.r0) at 0xfffff88005911000 - ModuleInit at fffff88005928330 and ModuleTerm at fffff880059285a0 using the native ring-0 loader
00:00:01.108 SUP: VMMR0EntryEx located at fffff880059295d0, VMMR0EntryFast at fffff88005928790 and VMMR0EntryInt at fffff88005928780
00:00:01.108 SUP: windbg> .reload /f C:\Program Files\Oracle\VirtualBox\VMMR0.r0=0xfffff88005911000
00:00:01.168 File system of 'C:\Users\Administrator\VirtualBox VMs\Win2K3_stan\Snapshots' (snapshots) is ntfs
00:00:01.168 File system of 'E:\VBox\Win2K3_stan\Win2K3_stan.vmdk' is ntfs
00:00:01.173 File system of 'E:\VBox\Data\Web.vmdk' is ntfs