Monthly Archives: March 2009

Installatron WordPress Upgrade Disables Plugins View Comments

I just found a quick tip on the Installatron forums. By default Installatron disables all WordPress plugins when doing an upgrade. This is due to the WordPress best practices for upgrading the version of their system. When you have a lot of WordPress installs to go through this is a big pain because it usually [...]

Memory Allocation Problems on Xen Server & Fix View Comments

Recently I started seeing this error while provisioning Xen VPSes on a server with 8GB of RAM: [2009-03-23 15:51:40 xend.XendDomainInfo 3310] DEBUG (XendDomainInfo:1603) XendDomainInfo.destroy: domid=None [2009-03-23 15:51:40 xend 3310] ERROR (xmlrpclib2:184) (12, ‘Cannot allocate memory’) I checked the memory, and sure enough, all of the VPSes were using up the memory. More specifically, dom0 (the [...]

Presentation on Hybrid Stealthy Networks – Wireless Ad Hoc Networks View Comments

I presented this paper to my class on March 17th, 2009. Hybrid Stealthy Networks – Paper Presentation Original paper: Hybrid Stealthy Communication Protocol (I got a 25/25!)

Apt-get Update GPG Key Errors and Fix View Comments

Running sudo apt-get upgrade, I started getting this error: Reading package lists… Done W: GPG error: http://ppa.launchpad.net intrepid Release: The following signatures couldn’t be verified because the public key is not available: NO_PUBKEY 313D312748A22A95 W: You may want to run apt-get update to correct these problems Ah ha! But apt-get update is the command causing [...]