My sister's been with PlusNet for about a year and has had no problems. Her speed isn't as fast as mine with Orange, but she pays less, which probably evens it out.
I'm on an up to 8 MB package and have been using IE8 since it came out - with no problems whatsoever, so the issue must be with your own computer/connection.
I've just installed a new Livebox Mini (had an old Speedtouch 330 modem from the old Freeserve days until today!), and although I've finally got everything set up and running okay without the CD (whi ...
