Letters jump around when typed

I have HP Notebook with Vista. When I type, the letters bounce to a different part of the sentence or paragraph. Not all the time but randomly. Any ideas on why and how to fix?
 
1) stop using 'JumpyFont'
2) I thought absinthe was illegal

Unless you are attempting to have a spot of fun with the folks here, that sounds like a virus?
 
Problem Fixed

I read other sites and the issue seems to be a common one with HP Vista laptops. The suggested fix was to uninstall and reinstall the keyboard. I did that and it fixed the issue.
 
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