Requesting Assistance with Server Error 500

I have been up and running with 2.xx for several months. I am now getting intermittent Server Error 500’s which lock up all site access, both public and admin. The problem is that WP is leaving stale processes running and finally my process limit is reached. I am not savvy enough to read the logs below to tell what the problem is. Any assistance would be appreciated.

I have been running WP on this host for several years, so I feel that they are not the source of the problem.

Your site hit the limit of your user processes. Here is the current list of processes for your user:
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
xeep 27268 0.0 0.5 21304 11948 ? SN 15:55 0:00 /usr/local/bin/php5.cgi show.php
xeep 32387 0.0 0.8 25716 16732 ? SN 15:55 0:00 /usr/local/bin/php5.cgi execute-pings.php
xeep 1908 0.0 0.5 21508 12168 ? SN 15:56 0:00 /usr/local/bin/php5.cgi inline-uploading.php
xeep 9334 0.0 0.5 21304 11948 ? SN 15:56 0:00 /usr/local/bin/php5.cgi show.php
xeep 29815 0.0 0.5 21304 11948 ? SN 15:56 0:00 /usr/local/bin/php5.cgi show.php
xeep 2992 0.0 0.5 21304 11948 ? SN 15:56 0:00 /usr/local/bin/php5.cgi show.php
xeep 17261 0.0 0.5 21312 11960 ? SN 15:57 0:00 /usr/local/bin/php5.cgi execute-pings.php
xeep 10502 0.0 0.5 21304 11948 ? SN 15:57 0:00 /usr/local/bin/php5.cgi show.php
xeep 10662 0.0 0.5 21304 11948 ? SN 15:57 0:00 /usr/local/bin/php5.cgi show.php
xeep 28758 0.0 0.5 21304 11948 ? SN 15:57 0:00 /usr/local/bin/php5.cgi show.php
xeep 29516 0.0 0.5 21304 11948 ? SN 15:58 0:00 /usr/local/bin/php5.cgi show.php
xeep 16510 0.0 0.5 21304 11948 ? SN 15:58 0:00 /usr/local/bin/php5.cgi show.php
xeep 25931 0.0 0.5 21304 11948 ? SN 15:58 0:00 /usr/local/bin/php5.cgi show.php
xeep 22584 0.0 0.5 21304 11948 ? SN 15:58 0:00 /usr/local/bin/php5.cgi show.php
xeep 23065 0.0 0.5 21304 11948 ? SN 15:59 0:00 /usr/local/bin/php5.cgi show.php
xeep 9630 0.0 0.5 21304 11948 ? SN 15:59 0:00 /usr/local/bin/php5.cgi show.php
xeep 12529 0.0 0.5 21304 11948 ? SN 15:59 0:00 /usr/local/bin/php5.cgi show.php
xeep 3998 0.0 0.5 21304 11948 ? SN 15:59 0:00 /usr/local/bin/php5.cgi show.php
xeep 14255 0.0 0.5 21304 11948 ? SN 16:00 0:00 /usr/local/bin/php5.cgi show.php
xeep 28074 0.0 0.5 21304 11948 ? SN 16:00 0:00 /usr/local/bin/php5.cgi show.php

We have terminated them for you. However, you should examine your software, as it appears to be causing some lock-ups. All of these processes were started almost an hour ago, which means that they have not terminated properly for some reason. You should examine your code, and try to find the cause for this, as it might happen again in the future.