It's not Opera that has this weakness. This may happen with any installed browser on PC. I dont known why, but some computers may be affected by Chrome in other browsers even after uninstall. For example on my father's laptop it f**ked all tables and frames, css, in my PC flash player is only partially functional - it worked on full before Chrome install, but wont working even after uninstall. There's no rule if Chrome will be good or evil, it's like russian roulette, also depends on computer, system, settings...