virtualbox.org

Greetings,
I have an issue that is starting to drive everyone using the virtualbox machine crazy. I have a webserver set up in a CentOS guest. Host is Win7 x64. Everything had been running well up until about 2 weeks ago when suddenly we began getting disconnects from people trying to browse the site set up on the webserver. We have eliminated the webserver itself as a culprit, and I do not believe that CentOS is causing this either. On my end I have virtualbox open (v. 4.1.22 r80657) and I have my terminal with CentOS loaded (I had been running CentOS headless, but when this issue cropped up I started loading it normally).

The thing that I notice is that the issue seems to pop up as my terminal goes into some form of sleep state (terminal screen is blank). I can "wake" things back up by typing within the terminal (a mouse click does not do it). CentOS is loaded without GUI and I have disabled ACPI and to my knowledge there are no power management features in this without gui anyway. I have been trying to search to see if there is such a feature within virtualbox but have not found it there either.

Any help would be appreciated in trying to get to the bottom of this.

What about the host? Is it set to go to sleep or power down services?
About two weeks ago could be about the time for the latest Windows updates? What updates if any were installed?

I don't believe it to be on the windows side of things as I am actively working on the host machine when the VM goes down. I notice when it does that the terminal for the guest is completely black and I have to click in and keypress to get it to display again. However, this does not fix the issue of external connections. Things seem to keep being offline until I either restart the network service or reboot the VM.

Post the guests log file after it has had this problem.

I will do so. I am guessing you mean the log I can view by right-clicking on the virtual machine name in virtual box and choosing "View Log"?

Yes