Re: IE7 is being a piece.
IT could be a wrong version or a old version of flash installed. That site is HEAVILY based on flash and the before mentioned could have a adverse affect on IE.
Seeing as how you say this is the 2nd windows he has opened makes me wonder why he isnt jsut suing the tab feature. that might resolve the issue. Could be the multiple windows of IE7, one based with heavy flash crash IE.
Okay upon testing myself i have no issue with this in Vista and IE7. I have Addictinggames.com open in one browser and 9 tabs in the other. No freezing on either and can use both.
So that would leave me to think he is using XP and IE7. Make sure he has all updates for IE. Other than that could be running out of resources.
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Phone: LG Optimus G Pro
Running: Stock JB from LG with Nova Launcher