I use a U.S. keyboard and hence the U.S. keyboard set in OS 10.7. However, I often have to use umlauts (¨) and accents when I write. Since forever I am using the keyboard method for producing these, e.g. umlaut = alt+u followed by letter on which I desire the umlaut. However, randomly and seemingly for no apparent reason I get the following: I press alt+u and instead of creating a highlighted "¨" in my text field, Safari opens a new window where the highlighted "¨" shows up, however, it won't let me type in any letter and I am left unable to insert umlauts and accents using the method I've been using for years. I know this sounds very convoluted so please see the pic where I point out the odd window that Safari opens.
Does anyone know why this happens and how, if possible, this window that pops up can be disabled?
Many thanks!
Does anyone know why this happens and how, if possible, this window that pops up can be disabled?
Many thanks!

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