So you're saying it's just a coincidence that everyone is having disconnect and load screen issues and that all our routers need updating?
BioWare released a crappy patch with crappy bugs, it's their job to fix it.
No i am saying the OP updated the firmware on his router and his issue was gone, he asked if it was possible that was the cause, the answer to that is most definately yes.
Take the blinkers off you have tunnel vision i'm afraid.
Edit - one person's fix doesn't mean it fixes the next person simply because the symptoms appear the same.