I'm having problems with the integral:
ln(a*x) or ln(x);
I'm having problems with the cursor of the wxMaxima too. When I'm writing, the cursor isn't in the word, but in front of it or longer. I don't know repare the cursor.
You probably want log, not ln. Maxima doesn't know what function ln is.
For the wxMaxima problem, you should write another bug report, or report it to wxMaxima.
Marking as pending/invalid.
I don't think the new SF bug tracker closes pending reports automatically. Closing this one by hand.