Hi Eerik,
please make sure you are checking right data source. try to start checking from the data Target.
Is your job delta / Full load??
1) please check your info object .. If it is PSA & target ??
2) BW - SM37 --> check for active jobs
3) Try to locate which is your job from the log .
4) select the job and get details --> click job details
you will get the PID no .
5) Go to SM30 --> delete with out core.
Do not delete from SM58 . If there are errors there ( time our etc ) put your cursor on the request and then press F6 ( or Edit --> execute LUW )
hope it helps.
Rgds,
sudhir.