Careful with "up to" claims...

- Talktime is likely quoted at minimum TX power, ie you're sitting under a cell station
- Standby time is likely quoted with the maximum interval between network polls (on GSM this is called the DRX level). Whether you get this time depends on how the provider's network is configured - and yes, networks are almost never configured with an interval this long...

Still, it does sound like it's not working right if there's a 6:1 difference between claimed and actual talktime...

Hugo