[arp242]

Opera Presto didn't use it, and had a User-Agent like:

  Opera/9.80 (X11; Linux zvav; U; en) Presto/2.12.423 Version/12.16

Didn't seem to cause that much problems.

It did keep the version at 9.80, presumably because >=10 must have caused problems somewhere.

[sunaookami]

God I miss Presto... but Opera did have major compatibility issues even when it was still popular.