Unsure exactly what the exact issue is, however the com_content cache get gathered real rapidly and also the website is crashes when browsing from home page to the category. Urgent assistance needed. It may be something simple, a skilled joomla developer knows.
You did not leave us much apple here so according to that.
Why not disable the cache in Global Configuration > System > Cache Configurations. It's not just a solution however it will in all probability fix your issue in the short-term.
Regrettably the caching is a little damaged in certain joomla 1.5.x versions, as well as their plug ins.