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I have two iMacs and just installed OS X Lion (clean install) on one of them (let's call it iMac A). I did a Time Machine backup and restored that backup to my other iMac (B) to avoid installing twice. Everything works perfectly except that Google Chrome is extremely slow on iMac B (where the Time Machine backup was restored to). Opening a new tab is slow, opening a web page is slow etc. Safari on B is fast and works as it does on A, so it's just on B that Chrome is slow (and Chrome is my preferred browser, so I'd like to get it up to speed).
To solve the problem on B, I've tried uninstalling Chrome (see How do I uninstall Google Chrome *completely* from my Mac?) but uninstalling and reinstalling did not do the trick.
Does anyone have an idea why it is slow only on B and how to fix it?
I found the real culprit that causes Google Chrome to get very slow on machine B but hadn't thought it as a possibility: Parallels Desktop (v6.0.12094). I did install Parallels Desktop on B after my time machine restore, so it turns out the problems had nothing to do with time machine (restore). After installing Lion on B from scratch, Chrome speed was good until I last night installed Parallels Desktop and suddenly my Chrome was slow again. Reverted to a time machine backup just before the Parallels Desktop installation and speed is good again. I will raise this issue the Parallels company. – rassom – 2011-08-07T11:20:32.097
PS. Once PD has been installed, the harm is done. Even uninstalling Parallels Desktop (move PD to trash/emptry trash) doesn't help on the Chrome being slow. A time machine restore to before PD installation or a fresh Lion installation is only way to get Chrome up to speed again. – rassom – 2011-08-07T11:30:28.627