"The Eye": Looks like eye of Sauron. Also seems to imply a big brother style thing. The "All hands" variant reminds me of something very NSFW.
"The Connector": If I squint I can see a... well, a blur. It just looks like a mess.
"Open button": Is that a power switch? An elevator? A hobbit hole?
"Protocol": This one isn't too bad.
"Wireframe world": Is that a Newton's cradle?
"The Impossible M": Not as bad as some of the rest, but I'm not sure what it's trying to convey.
"Flik Flak": It's like someone took Jenga and did something unseemly to it. What were they thinking?
The only one that looks vaguely professional is Protocol.