Link URL on Promo Block Not Working

I have tried several attempts to find out why this is happening...

I am trying to provide a link to Boonex, from my homepage Promo..

In the Promo block I have:

Jacksonville Webcams, running Dolphin 7.0.3 Social Networking Software by Boonex; (even cut and paste does not have correct link info from here..)
for the webcams, click on each thumbnail below for a larger, live image

and this is the actual code from promo.

<h3>Jacksonville Webcams, running Dolphin 7.0.3 Social Networking Software by <a href="http://www.boonex.com/">Boonex</a>;<br />for the webcams, click on each thumbnail below for a larger, live image</h3>

When clicking on the "Boonex" link this is what I get in the address bar of a broswer.

"http://www.duvallocals.info/\http://www.boonex.com/\"

attached photos..

I believe it is a known problem. Related to this ticket here. http://www.boonex.com/trac/dolphin/ticket/2177

Remove the cache file sys_options_*.php from the cache folder after you change the content of the promo box.

The * in the filename is a wildcard. Could be any number of random characters there.

As usual! Thanks Deano, that was the problem, I had to manually clean cache folder via ssh

I did forget that on this server I am using memcache and clearing the cache in the admin panel does not work if you have Memcache enabled which needs more work..

so if you have the cache settings "on" certain parts of the cache will not clear, its a manual thing right.

The reason for this EDIT and add of pictures; for the benifit of other members experimenting with the cache features and the hidden problems it creates.

I still use will use the memcache it because of the leaps in speed..