فور صدوره VirtualBox 4.0.6.71416لعمل نظام تشغيل وهمي داخل ويندوز

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هو عبارة عن وسيلة تساعدنا لإنشاء نظام داخل نظامنا الأساسي على أن يكون النظام الجديد نظاما كاملا يمكنك الدخول إليه و التصفحمن خلاله و تجريببرامجك و كل شيء و تجريب النسخة ايضا و معرفة قدرتها قبل تثبيتها على جهازك الحقيقي عن طريق قرص أو حتى عن طريق ملف إيزو محمل من الأنترنت يساعدك النظام التخيلي أو الوهمي في الحفاظ على جهازك حيت أن أي استعمال للنظام لا يؤثر على النظام الأساسي و يمكنك التخلي و التخلص عن النظام التخيلي في دقيقة كما يعتبر الوسيلة الآمن لتجريب الفيروسات و الملفات المشكوك فيها.. حيث و إن انخرب هذا النظام التخيلي وفلا تأثير على النظام الأساسي كما أن إمكانية تثبيت أنظمة أخرى غير أنظمة ميكروسوفت ممكن أيضا و خاصة الأنظمة الصعبة التي لو ثبتها من غير خبرة مسبقة قد تسبب لك مشاكل هذا إجمالا أما عن برنامجنا اليوم فهو برنامج رائع جدا و مجاني فلا كراكات و لا شيء ،، كما يعتبر من اسرع البرامج في هذا المجال و منافسا قويا للبرنامج المقدم من ميكروسوفت Virtual PC 2007 أو حتى VMware و غيرها من البرامج التي تقوم بنفس الدور

التعديلات التي تمت
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Changes in VirtualBox 4.0.6 (released 2011-04-21):
* VMM: fixed incorrect handling of ballooned pages when restoring a VMM from a saved state
* VMM: don't crash on hosts with more than 64 cores / hyperthreads; implemented support for up to 256 host cores (except Windows hosts; bug #8489)
* VMM: fixed guru meditation for PAE guests running on hosts without PAE (bug #8006)
* VMM: fixed slow Linux guests with raw mode and recent guest kernels (bug #8726)
* GUI: support host key combinations (bug #979)
* GUI: fixed progress indicator (bug #7814)
* GUI: show the mouse pointer while the VM is paused if the USB tablet mouse emulation is used (bug #6799)
* GUI: adapt the snapshot folder as well when renaming a VM (bug #8469)
* GUI: persistently remember the last folders of the disk/DVD/floppy selectors
* GUI: never allow to start a VM with USB-2.0 activated if the proper extension pack is missing (bug #8182)
* GUI: fixed hang/crash when opening a file dialog in an non-existing folder (bug #8673)
* Snapshots: fixed a bug which could lose entries in the media registry when restoring a snapshot (bug #8363)
* Snapshots: allow snapshots to be stored in the VM directory
* 3D support: fixed a crash if a VM was forced to terminate (Windows hosts only; bug #7133)
* Storage: fixed memory leak (4.0 regression; bug #7966)
* Storage: fixed access to iSCSI targets over internal network
* Storage: fixed reading from disks with more than one snapshot for VHD and VMDK images with disabled host cache (bug #8408)
* Storage: fixed a possible hang during VM suspend after an I/O error occurred
* Storage: fixed a possible hang during VM suspend / reset (bug #8276, #8294)
* Storage: automatically create a diff image when attaching a streamOptimized VMDK image to a VM
* ATA/SATA: fixed automounting of virtual CD/DVD mediums with recent Linux distributions by correctly reporting the current profile as 'none' if no medium is present
* Buslogic: fixed emulation for certain guests (e.g. jRockit VE)
* Host-Only Networking: fixed interface creation failure on Windows hosts (4.0.4 regression; bug #8362)
* Host-Only & Bridged & Internal Networking: fix for processing promiscuous mode requests by VMs, defaulting to switch behaviour
* Host-Only Networking: fixed connectivity issue after resuming the host from sleep (bug #3625)
* Bridged Networking: support for interface bonding on Mac OS X hosts (bug #8731)
* NAT: fixed processing of ARP announcements for guests with static assigned IPs (bug #8609)
* VRDP: backward compatibility with VRDPAuth external authentication library (bug #8063)
* Shared Folders: don't fail to start a VM if a path is not absolute, for example when importing an OVF from a different host (bug #7941)
* Audio: fixed crash under certain conditions (bug #8527)
* USB: fixed a crash when plugging certain USB devices (bug #8699)
* HPET: fixed time jumps when reading the counter (bug #8707)
* OVF/OVA: automatically adjust disk paths if the VM name is changed on import
* OVF/OVA: fix export to slow medias
* OVF/OVA: automatically repair inconsistent appliances with multiple disks (bug #8253)
* rdesktop-vrdp: fixed an assertion triggered under certain conditions (bug #8593)
* Windows hosts: fixed occasional hangs during VM shutdown because sometimes COM was not properly uninitialized
* Mac OS X hosts: prevent the mouse from leaving the VM window while captured
* Mac OS X hosts: keep aspect ratio while resizing in scale mode (shift for old behaviour) (part of bug #7822)
* X11 hosts: fixed Yen key support (bug #8438)
* X11 hosts: fixed a regression which caused Host+F1 to pop up help instead of sending Ctrl+Alt+F1
* Linux hosts / Linux Additions: mangle IPRT symbols to allow installing VirtualBox inside a VM while the Guest Additions are active (bug #5686)
* Linux hosts / Linux guests: workaround for a bug in GLIBC older than version 1.11 leading to crashes under certain conditions (signed/unsigned problem with memchr on 64-bit machines)
* Solaris hosts: fixed a deadlock in event semaphores that could lead to unkillable VM processes
* Windows Additions: fixed Sysprep parameter handling
* Windows Additions: fixed spontaneous guest reboots under certain circumstances (4.0.2 regression; bugs #8406, #8429)
* Windows Additions: added auto logon support for locked workstations on legacy Windows versions
* Windows Additions: fixed driver bugcheck error when handling PnP messages (4.0 regression; bug #8367)
* Windows Additions: fixed memory leak in VBoxVideo
* X11 Additions: added support for X.Org Server 1.10 final
* Linux Additions: Linux kernel 2.6.39-rc1 fixes
* Linux Additions: improved auto-run support (bug #5509)
* Linux Additions: fix mouse support on SUSE 11 SP 1 guests (bug #7946)
* Solaris Additions: added support for X.Org Server 1.9
* Guest Additions: various bugfixes for guest control execution
* Webservice: use own log file, with log rotation to limit size

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