Same here! I believe it was yesterday when I first noticed that www.yahoo.com was opening as their mobile version. Going into the address bar to change the address manually doesn't have an effect since there's something in their script that is making the redirect. Very frustrating.

I normally use Safari on my Mac but have tested this in Firefox and Chrome. All three browsers yield the same result...I get the mobile version which stinks.

So, all of the above tests were done yesterday and today with the same results on a Mac running OS X Lion.

I happen to have here an old pc which can boot to Ubuntu linux and Windows XP. I tried going to www.yahoo.com in Ubuntu running Firefox and it loads the way it should...I get the complete "normal" yahoo page.

If I boot up in the Win XP OS and use Safari to go to yahoo it works fine there too.

So, it looks as if there's a problem but only with how these pages are loading up on Macs. I did update my Mac a few days ago but I know yahoo worked fine over the weekend (after I ran the update). It wasn't until some time yesterday that I started getting redirected to the mobile site.

I'm going to take a look in the settings for the Mac OS to see if anything looks like it needs tweaking but I'm not hopeful about finding anything there.

Any ideas anyone?

Just tried yahoo again today (10/27/2011) on my Mac and all is well. Whatever the issue was, they have it fixed. Tried msnbc.com as well and it is working too.