Opera seems to screw up more then any browser I've used. It crashes, freezes and does not recognize hot links.
I use the 64 bit 12.00 which crashes so much I seldom fire it up. The 11.6 32 bit I mostly use is much better but still finds ways to irritate. If I wanted spend time searching issues and reconfiguring, I would have stuck with IE.
Running a late model PC, W7 updated, secured and clean.