All I've found with access to your installation is that it hangs up 🙁
I've tested some queries and it hangs up on this one:
serve.php?f%5B0%5D=modules%2FLibs%2FScriptAculoUs%2F1.8.0%2Fscriptaculous.js&f%5B1%5D=modules%2FLibs%2FScriptAculoUs%2F1.8.0%2Fbuilder.js&f%5B2%5D=modules%2FLibs%2FScriptAculoUs%2F1.8.0%2Feffects.js&f%5B3%5D=modules%2FLibs%2FScriptAculoUs%2F1.8.0%2Fdragdrop.js&f%5B4%5D=modules%2FLibs%2FScriptAculoUs%2F1.8.0%2Fcontrols.js&f%5B5%5D=modules%2FLibs%2FScriptAculoUs%2F1.8.0%2Fslider.js&f%5B6%5D=modules%2FLibs%2FScriptAculoUs%2F1.8.0%2Fsound.js&f%5B7%5D=modules%2FLibs%2FQuickForm%2FFieldTypes%2Fautoselect%2Fautoselect.js&f%5B8%5D=modules%2FTools%2FSessionKeeper%2Fsk.js&f%5B9%5D=modules%2FUtils%2FShortcut%2Fjs%2FShortcut.js&f%5B10%5D=modules%2FUtils%2FTooltip%2Fjs%2FTooltip.js&f%5B11%5D=modules%2FUtils%2FGenericBrowser%2Fjs%2Ftable_overflow.js&f%5B12%5D=modules%2FUtils%2FRecordBrowser%2Findexer.js&f%5B13%5D=modules%2FBase%2FDashboard%2Fab.js&f%5B14%5D=modules%2FUtils%2FWatchdog%2Fapplet_mark_as_read.js&f%5B15%5D=modules%2FLibs%2FLeightbox%2Fleightbox.js&f%5B16%5D=data%2FBase_Theme%2Ftemplates%2Fdefault%2FLibs%2FLeightbox%2Fdefault.js&f%5B17%5D=data%2FBase_Theme%2Ftemplates%2Fdefault%2FUtils%2FGenericBrowser%2Fdefault.js&f%5B18%5D=modules%2FLibs%2FQuickForm%2FRenderer%2FTCMSDefault.js&f%5B19%5D=modules%2FUtils%2FRecordBrowser%2Fmain.js&f%5B20%5D=modules%2FApplets%2FClock%2Fcoolclock.js&f%5B21%5D=modules%2FUtils%2FMenu%2Fjs%2Fmenu.js&f%5B22%5D=modules%2FBase%2FStatusBar%2Fjs%2Fmain.js&f%5B23%5D=modules%2FBase%2FHelp%2Fjs%2Fcanvasutilities.js&f%5B24%5D=modules%2FBase%2FHelp%2Fjs%2Fmain.js&f%5B25%5D=modules%2FBase%2FBox%2Fcheck_for_new_version.js&f%5B26%5D=data%2FBase_Theme%2Ftemplates%2Fdefault%2FBase%2FBox%2Fdefault.js&1417089292
It gathers all those files and serves them as one output.
On my localhost it works perfectly...
Without server logs it's hard to tell anything right now 🙁
You could try to disable MINIFY_ENCODE in data/config.php
/*
* Compress HTTP output
*/
//define('MINIFY_ENCODE',1);
change to
/*
* Compress HTTP output
*/
define('MINIFY_ENCODE',0);
It will disable gzip encoding of output, but still I have no idea why it hangs up and what's the reason.
You have to contact your provider for help.
Regards,
Adam
PS. Sorry for hanging up your server during tests.