I once had the unfortunate experience of losing some of my Favotites on IE. I asked one of my IT friends to troubleshoot for me. He said that it was because I had way too many folders with only a few items in each one. He told me to use fewer folders and then make subfolders, subsubfolders, etc. He said that he could figure this out not because he used IE but because he's an IT professional and he thought about it as if he were writing the software. I have followed his advice and I have not lost any of my Favorites. It is a bit of a nuisance, though, to go first to a folder, then a subfolder, then a subsubfolder. I have so many favorites in subsubfolders under "Music." :-)