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BGPv4 – open and keepalive messages – moving from connect to open state – eBGP peers

Description

Routers R1 nad R2 are connected through the serial HDLC line. R1 router is a BGP speaker running AS 200, the R2 router is an AS100 BGP speaker. Both routers are configured with correct BGP neighbor commands to form an eBGP peering. The capture is displaying the moment when we activate serial interconnecting interface (no shutdown)  of the R2 router.

Upgrade on Virtualbox 4.3.4 – fail to start virtual machines – VT-x error

I'm using virtualbox to run couple of my virtual machines inside of the Windows 7 64bit. Two days ago I have upgraded my running Virtualbox software to new version 4.3.4. After upgrade I was not able to start and run any of my virtual machines (Win7 32it, Xubuntu, KaliLinux, Mint) which works fine inside of previous virtualbox version.
After start I have received window with message telling that VT-x is disabled inside of the BIOS. The log file I have found inside one of the machines telling the same: