This is from the host provider:
Your account is still causing issues, rarely but "hard". Every now and then he's getting like 15-20 .php processes, that would immediately raise the load from 8 to 20. If his processes are not killed, they'll slowly stop "rebuilding" and dying, bringing the load back to a normal value.
Here is a list of the processes.
" PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
2377 profe27 25 0 48972 38m 4184 R 23 1.0 0:01.80 php
2449 profe27 25 0 39428 29m 4060 R 23 0.7 0:01.20 php
2447 profe27 25 0 41672 31m 4108 R 22 0.8 0:01.32 php
2426 profe27 25 0 49752 39m 4192 R 21 1.0 0:01.65 php
28665 mysql 15 0 144m 103m 3704 S 20 2.6 226:11.11 mysqld
2342 profe27 23 0 46300 36m 4196 R 20 0.9 0:01.91 php
2421 profe27 25 0 49236 39m 4160 R 19 1.0 0:01.70 php
2433 profe27 25 0 37000 27m 4084 R 17 0.7 0:01.13 php
2480 muchf3 25 0 19544 10m 3988 R 16 0.2 0:01.19 php
2551 gilma4 20 0 21488 12m 4080 R 11 0.3 0:00.34 php
2381 profe27 24 0 49608 39m 4180 R 10 1.0 0:01.80 php