restarting twoftpd

Hello,

I have installed twoftpd on a fresh debian wheezy machine. However, I cannot
make a ftp connection to localhost. In the logfile it is explained:

@400000005537a5840bfb9aa4 tcpsvd: info: start 4269 localhost:127.0.0.1
::127.0.0.1:54805
@400000005537a5840c037a44 twoftpd-auth: error while loading shared
libraries: libc.so.6: failed to map segment from shared object: Cannot
allocate memory

In other posts I found I have to raise te memory limit of the process. But I
can't seem to find a clue how to _restart_ the ftp daemon. Can you help me?

thanks in advance, Ruud