Today Adobe has released an update (7.5.3) for InDesign and InCopy, addressing numerous issues.
John Hawkinson has posted an extensive list here, but notable fixes include:
Stability enhancements due to fixes to apparently random crashes when copying & pasting, exporting to PDF with text variables, file recovery, packaging & preflighting and with certain fonts in balanced text frames.
Performance improvements when moving objects when display is set to High Quality and general redraw performance improvements.
Improved graphics handling including white stitching line in JPEG export with certain placed images scaling percentage and JPEG export resolution and reduced transparency support for TIFF files from Photoshop CS6.