Since CKEditor 3.4.2 there is no problem (at least to my knowledge) with selecting text with a mouse in IE9.
Could you describe your problem in more detail? What version of CKEditor are you using? Are you using default version of CKEditor or you have set your custom settings? If so, could you paste those settings? Are you using CKEditor integration (E.g. Java, PHP) or does the problem occur in JS version?
Re: Mouse problem with IE9
Could you describe your problem in more detail?
What version of CKEditor are you using?
Are you using default version of CKEditor or you have set your custom settings? If so, could you paste those settings?
Are you using CKEditor integration (E.g. Java, PHP) or does the problem occur in JS version?