I think the reason why is my girlfriends computer, but I could be wrong. She bought her MacBook in 2007 (or 2008), and I bought my iMac in 2010. Now, her MacBook version is 10.4.11, and my iMac is version 10.6.6. For Me, in iChat Preferences, under Accounts, on Security, I have "Allow AOL's server to relay video chats" checked, even when it's NOT checked, it still doesn't work. I'm not sure what the preferences are under her MacBook. The Default IM Application I'm using is iChat (5.0.3), again, not sure what hers is. My internet works perfectly fine, and hers works good also. But sometimes, she's not able to get my IMs, and sometimes it would say she's online, but she's really offline. I don't think it's my computer, since its new and up to date, and I'm assuming that it could be hers. Would she need to upgrade her software to Lion this summer for everything to work properly, or should she get a new computer all together? Does anyone know what the problem could be?