Received your file (attached) and went through it. Your proxy config seems to be the issue. If you say it works fine then after a while it stops it seems to be a case of resource exhaustion. For those familiar with squid your cache will die on you silently if you run out of HDD space - I think there&#39;s a similar case here. Either its memory running out or available connections.<div>

<br></div><div>What are the specs of the PC running the proxy? Be sure to check the free RAM &amp; HDD space under <font class="Apple-style-span" face="&#39;courier new&#39;, monospace">/system resource print</font><br><div>

<br></div><div>Try these options:</div><div><ul><li>Set max-cache-size to a definite value instead of leaving it unlimited - use the system resource output as a guideline.</li><li>Have you also tried checking its performance when you disable the proxy access rules?</li>

<li>You can also play with max-client-connections and raise it a bit - maybe there are many TIME_WAIT connections piling up that exhaust it (though I&#39;m not 100% sure if they count towards this total).</li></ul></div>
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As for your proxy access rules...umenyonga watu kabisa. :)</div></div><div><br></div><div>Have you read this? <a href="http://wiki.mikrotik.com/wiki/How_to_make_transparent_web_proxy">http://wiki.mikrotik.com/wiki/How_to_make_transparent_web_proxy</a></div>

<div><br></div><meta http-equiv="content-type" content="text/html; charset=utf-8"><div>Finally, perusing the mikrotik forums always helps as you almost always find someone asking a similar question: <a href="http://forum.mikrotik.com">http://forum.mikrotik.com</a></div>