I have the same issue for a particular site. It's coming up a lot. My referred log had pages and pages of these:
rad_curl_task.cpp:214] CRadCurlTask::write_callback: [INFO] nmemb = 1448
[rad_curl_task.cpp:213] CRadCurlTask::write_callback: [INFO] enter to ...
[rad_curl_task.cpp:214] CRadCurlTask::write_callback: [INFO] nmemb = 1448
but then more interestingly has this:
[rad_decrypted_response_task.cpp:138] CRadDecryptedResponseTask::decrypt: [ERROR] response size is 1394880' limit to 1000000
[rad_decrypted_response_task.cpp:81] CRadDecryptedResponseTask::getResponseString: [ERROR] failed to decrypt response 0xefc34238
[rad_response_task.cpp:67] CRadResponseTask::run: [ERROR] can not get response string
We seem to be overrunning some sort of response size limit.
It's all happening for the same URL over and over, the URL is nothing special, it's just this: cs.mytheresa.com