bug report: iPhone 3G with gps navigation damaging sim card

While on vacation I tested the Navigon Mobile Navigator extensively - meaning several hours continuously.

The verdict: iPhone + Navigon Mobile Navigator is a great combination - they are reliable big time in Europe.

EXCEPT: they completely damaged my phone sim card - so while on roamning I didn't had any phone, data, etc!!! I guess it's again due to excessive heating ...

Apple - do you have this on your bug list with a significant priority ?? :-)

ps: to reproduce this bug again - I will wait for my next vacation :-P

[LATER EDIT] - sometimes it happens to wait few minutes until the GPS signal is available - but after this everything works fine. In some cities between mountains this waiting can be up to 10 minutes. Also the recomputing of a route can take 20 seconds if the route is >=500km. The Navigon 'lane assistant' is very useful when on the highway - it nicely shows you with several km before on which lane you should stay. This feature is not available on Sygic Mobile Europe. Also the navigation is worse in Sygic - but it has more hotels and other POI's overall.