Postgresql wants cygcygipc-2.dll despite server - cygwin 1.5.7

Just removed ipc-daemon2 to ty cygwin 1.5.7-1 (2004-01-31) cygserver

cygrunsrv --remove postmaster
cygrunsrv --remove ipc-daemon2
... setup.exe (remove cyg-ipc2)
.... setup.exe (cygwin 1.5.7)
... setting CYGWIN=server.
cygserver-config
... starting cygserver
.... and then
cygrunsrv -I postmaster --path /usr/bin/postmaster --dep cygserver\
--termsig INT --user postgres --shutdown -e CYGWIN=server\
--disp Cygwin_Postmaster -a '-D /var/pgdata -i'

Now i cannot start the postgres 7.4.1-3 database as service anymore.
When trying it states something (german) like this:

Application popup: postgres.exe - DLL not found:
cygcygipc-2.dll not found in PATH:
U:\cygwin\bin;D:\WINNT\System32;D:\WINNT\system;D:\WINNT;
....