TYPO3 Core

I have had the problem that I cannot not add content elements to pages. It's not a problem to create pages, but when I click on "Add Content Element", I do not get the expected list of possble content elements, but the frame turns empty.

Since no error shows up, I tried to figure out what the problem could be. In the error log I got the following messages:

EACCELERATOR hit: "/m27ddtdq/www.m27.eu/t3lib/class.t3lib_ajax.php"
EACCELERATOR hit: "/m27ddtdq/www.m27.eu/typo3/sysext/lang/lang.php"
EACCELERATOR: Open for write failed for "/tmp/eaccelerator/c/d/eaccelerator-4502.9715731841": No such file or directory
EACCELERATOR cached: "/m27ddtdq/www.m27.eu/t3lib/class.t3lib_arraybrowser.php"
[Mon Jun 30 12:43:41 2008] [error] [client 83.64.102.206] mod_security: Filtering against POST payload requested but payload is not available [hostname "m27.eu.server230-han.server-routing.com"] [uri "/typo3/index.php"]
[Mon Jun 30 12:43:41 2008] [error] [client 83.64.102.206] mod_security: Filtering against POST payload requested but payload is not available [hostname "m27.eu.server230-han.server-routing.com"] [uri "/typo3/index.php"]
[Mon Jun 30 12:43:41 2008] [error] [client 83.64.102.206] mod_security: Filtering against POST payload requested but payload is not available [hostname "m27.eu.server230-han.server-routing.com"] [uri "/typo3/index.php"]
[Mon Jun 30 12:43:41 2008] [error] [client 83.64.102.206] mod_security: Filtering against POST payload requested but payload is not available [hostname "m27.eu.server230-han.server-routing.com"] [uri "/typo3/index.php"]
[Mon Jun 30 12:43:41 2008] [error] [client 83.64.102.206] mod_security: Filtering against POST payload requested but payload is not available [hostname "m27.eu.server230-han.server-routing.com"] [uri "/typo3/index.php"]
[Mon Jun 30 12:43:41 2008] [error] [client 83.64.102.206] mod_security: Filtering against POST payload requested but payload is not available [hostname "m27.eu.server230-han.server-routing.com"] [uri "/typo3/index.php"]
[Mon Jun 30 12:43:41 2008] [error] [client 83.64.102.206] mod_security: Filtering against POST payload requested but payload is not available [hostname "m27.eu.server230-han.server-routing.com"] [uri "/typo3/index.php"]
[Mon Jun 30 12:43:41 2008] [error] [client 83.64.102.206] mod_security: Filtering against POST payload requested but payload is not available [hostname "m27.eu.server230-han.server-routing.com"] [uri "/typo3/index.php"]
[Mon Jun 30 12:43:41 2008] [error] [client 83.64.102.206] mod_security: Filtering against POST payload requested but payload is not available [hostname "m27.eu.server230-han.server-routing.com"] [uri "/typo3/index.php"]
[Mon Jun 30 12:43:41 2008] [error] [client 83.64.102.206] mod_security: Filtering against POST payload requested but payload is not available [hostname "m27.eu.server230-han.server-routing.com"] [uri "/typo3/index.php"]
EACCELERATOR hit: "/m27ddtdq/www.m27.eu/typo3/index.php"
EACCELERATOR hit: "/m27ddtdq/www.m27.eu/typo3/init.php"
EACCELERATOR hit: "/m27ddtdq/www.m27.eu/t3lib/class.t3lib_div.php"

(This is just a short snip. The complete list is muchm much longer).

I do not know if this problem is really responsible for the problem while adding content-elements, but it does not look good and there seems to be a problem.

Unfortunately the hoster doees not allow

SecFilterEngine off

in .htaccess (I get a misconfiguration-error when I add this).

Is there a known problem with mod_security and/or a workaround?

(issue imported from #M8870)