Hi babajaga, i removed the installed squid by yast, as you suggested. Then i did the steps in order you provided, but when i am at the point where i do ".configure" this is what i get: ------------------------- ./configure checking for a BSD-compatible install... /usr/bin/install -c checking whether build environment is sane... yes checking for a thread-safe mkdir -p... /bin/mkdir -p checking for gawk... gawk checking whether make sets $(MAKE)... yes checking how to create a ustar tar archive... gnutar checking whether to enable maintainer-specific portions of Makefiles... no checking for gcc... no checking for cc... no checking for cl.exe... no configure: error: in `/tmp/squid-3.1.23-20130721-r10487': configure: error: no acceptable C compiler found in $PATH See `config.log' for more details ----------------------- -- View this message in context: http://squid-web-proxy-cache.1019090.n4.nabble.com/How-to-upgrade-a-running-Squid-3-1-12-to-a-newer-version-SLES-11-tp4664449p4664451.html Sent from the Squid - Users mailing list archive at Nabble.com.