I've been having trouble staying logged into 
other places too, ones that I used to never have 
to re-login to.  I find that I need to login to 
EZboards, YJ to view my watch list, and I'm 
always logging into ebay.  Some other sites like 
this one seem to still work normally, though.  
The problem with the other sites started 
recently, long after I fiddled with those 
restriction settings.  I don't believe I've 
changed anything since then, so I can't figure 
it out -_-