Use Terminal for DNS cache.

sudo dscacheutil -flushcache

It asks for admin user password, remember the password doesn't show when you type it in Terminal.

Hehe...I'll use Cocktail if it's all the same. Terminal scares wimps like me....
Besides, I already own CT and it does all the other house cleaning chores. This is on the refurb iMac that you convinced me to go with. It's coming up on a year this month and i just activated AppleCare too.

Wimp.

I don't see anything in Cocktail for DNS cache though.

Actually you can screw things up with Cocktail pretty easy since it gives a GUI to things one usually does manually or in Terminal. A case of digital TMI if you don't know you're doing, from changing permissions, removing internet log in stuff, to removing localizations.

Re: New iMac. It's been a year? It's outdated already.

Files/Caches/Internet

So the average Joe should mucking around in Terminal? What's wrong with a GUI.. that's why we have them, isnt it? To make it easier than CLI.

Anyways.. no go on my internet issues thus far. I am seeing this page tho...
http://support.apple.com/kb/TS3408

Power down your routers/Airport and modem too. The routers cache DNS I know for sure, not sure about all modems.

I'm pretty sure Cocktail doesn't clear the DNS cache. I don't know where the DNS cache file is, never have manually moved it. I think the DNS caching is deep in the system somewhere.

I prefer a GUI also but what I mentioned is that Cocktail allows too easy click and go access to things that you shouldn't be doing if you don't know what they are for. I like it for certain specialized things that I need once in a blue moon, but in general the OS takes care of all of that prebinding, launch services etc crap automagically anymore. I can't remember the last time I needed more than font caches or system/user caches cleared. The one thing I do on a regular basis, especially with designers, is clearing font caches. I just use FontFinagler, it does Adobe MS and Quark caches like Cocktail does, but lets me pick and choose which ones I want to delete. It does one thing and does it well.

The other item I use is Lion Cache Cleaner.

Clearing localizations I've seen cause problems numerous times, and in these days of huge HDs the amount of room it saves in negligible. Messing with permissions and ACLs should not be done unless one really knows what they are doing.

Clearing cookies will cause you to have to log back in to some sites, an inconvenience.

Disabling sudden motion sensors and disabling journaling I see no reason for and are safeguards that shouldn't be disabled, and watch what you do in Network also. the only reason for disabling journaling might be to speed up HD access if one is doing massive video crunching or something, but in general is a good thing to have on to keep the HD healthy.

I gave you the terminal command so I'd hope you'd trust it. The main thing you have to worry about in Terminal is if one is using the rm command to delete files, that is something you can't undo.

I'm at their mercy.. I have an AP in my studio in Bridge mode for my 2 Macs. I took it out of the equation. I singly hooked each one to the internet straight outta the wall... each has a slowness/hanging issue. I think it's them... but the IT guy tells me all the other Macs in the building don't have issues.
He's no Reboot, that's fer sure, so I take it with a grain of salt when he tells me anything.
Is there anything I might have installed that creates this issue?
I'm gonna take the iMac home and see what happens on my lil network there...

Brown noser, but I like it.
Ad/Flash blockers, anti-virus, MacKeeper off the top of my pointed little head. I hope the h you didn't install MacCrapper.
Clear the DNS cache before lugging that home.

Okay, just re-read your reply, that's a good possibility but still try the DNS clear then plug directly in.

Edit - BTW, in your Network prefs, make sure you set the service order so the one you are using is at the top, use the little gear icon thingy to get to Set Service Order.

Nope..don't do any of that crap.

Did the Terminal thing and restarted.. no go.
Thanks anyways.

Set the Services order also... Ethernet first.