Many have seen a little date next to the title in the SERPs before. What this is Google Personalized Results, and if you are signed in and you have clicked on a result in the past, it will show you the last time you clicked on that result. For example, I did a search on urchin url builder and clicked on the result back on Jan 12. When I searched on that term today, I was shown this information, in addition to the remove result link.
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This is perfectly normal to see in your results. If you want to try it out yourself, login, click on Search History, top right of the inner SERPs page, and search on a term you found in your search history.
Forum discussion at WebmasterWorld.