>I believe the paramaters you give are not the real parameters
>of the config that is running, or I must be very stupid.

Ok, you got me. I never said it's 3.9G. Actually the tape holds 12.0G.
Sorry Guys, I'm not joking, just trying hard.
The config below was just the example and I did not change it :-(

>
>
>forster AT bluemail DOT ch wrote:
>...
>> 
>> tapetype SURESTORE-1200E
>> 
>> define tapetype SURESTORE-1200E {
>>     comment "HP AutoLoader"
>>     length 3900 mbytes
>>     filemark 100 kbytes
>>     speed 500 kbytes
>> }