edit text in columns

I have installed Drupal 6.10 and XStandard Lite for a personal hobby site at www.gargcentral.com.

I created two colums with picture in left and some text in the right. When I press return in the right column to enter line break in wysiwyg mode, the whole desk top is frozen. I have tested this behavior in FF_3.07, IE 7 and Chrome.

Thanks

PS: Does any one know if this thing is stable enough in contrast to fckeditor or tinymce?? I like the concept of XStandard despite client requirements but am concerned...