No - that doesn't sound right at all. They should hold voltage better than that - unless you were discharging at a really big rate like 30, or 40amps. You should've discharged a significant mah to get down to that voltage. What capacity, how many cycles on them??

Lipo has practically no self discharge. I got a pr of pacs for a project that never happened and they're right at a yr old (this month) - I've been measuring voltage at least once a month - went from 11.4v to 11.1v in a year.