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PM is safe.

if so, your way is ok and not a problem. just searched, a user(here lsadm) belonging to max number of groups is 32 or 16. if only 5 users, I think it's ok. please wait for our development's investigation result.

not sure, maybe you can refer Virtual Host Templates -> EasyRailsWithSuEXEC

I can reproduce the issue you reported on centOS: #groups lsadm lsadm : lsadm nobody user1 after upgrade: #groups lsadm lsadm : lsadm nobody and it can be fixed by change line 905 of functions.sh from usermod -G $WS_GROUP lsadm to usermod -a -G $WS_GROUP lsadm we'll estimate if...

what's the permission of conf/, conf/vhconf.xml ?

check if it's overridden in .htaccess for example, php_value upload_max_filesize 2M

can you identify which process has high CPU usage, by "top -c" etc? ddos usually last short time only, is your website DDOS'd continuously?

maybe you can order "Advanced Anti-DDoS Setup" https://store.litespeedtech.com/store/cart.php?gid=5 we have some experience on anti-ddos and have succeeded on a lot user cases. but not 100% sure if it apply for your case as well.

may be not. try to ask your host to disable that rule. if that rule already disabled, then maybe mod_security plugin for cPanel has been installed by your host, that acts same as request filter but more powerful and complex.

it may trigger certain "Request Filter" rule. check lsws admin console->Server->Request Filter, disable "XSS attack" rule if it's enabled.

~>curl -I http://www.clip4u.org/wp-content/themes/clip4u_blue/style.css HTTP/1.1 200 OK Date: Mon, 04 Jun 2012 09:43:54 GMT Server: LiteSpeed Accept-Ranges: bytes Connection: Keep-Alive Keep-Alive: timeout=5, max=100 ETag: "5d2a-4fcc5fed-0" Last-Modified: Mon, 04 Jun 2012 07:12:45 GMT...

the 2nd virtual host: WaiQ is 5. in this case, try increase Server->General->PHP suEXEC Max Conn current value looks to be 5. increase to 10 and watch real-time stats again.

maybe bad sects under /tmp/lshttpd ? Please PM your server's access info, I'd investigate this strange issue.

I think this is where the main problem is --- please fix it before trouble-shooting other issues. maybe hard disk has hardware problem.

is the size of /tmp/lshttpd/swap big? #du -sh /tmp/lshttpd/swap

please check error.log/stderr.log, grep "oops", there'll more detail about the 503 error.

the default swap is /tmp/lshttpd/swap is your /tmp NFS ? it may be very slow per some of our past experience. if so, better to use local disk as /tmp also, please run iostat to check if some of hard disks have high i/o wait issue.

a full stop and start may resolve it, restart not working --- this is my experience on one or two servers. please try if it works for your case.

no. not support

please note this info: [ERROR] Failed to find your license key under - /usr/local/lsws/ or /usr/local/lsws/conf/! either /usr/local/lsws/trial.key or /usr/local/lsws/conf/trial.key should exist otherwise, the trial version won't run. maybe you deleted the file accidently. try re-apply...