Prevent Magento from caching query strings, such as limit param -

the behavior

i display 3 products per page. in catalog.xml have

<action method="setdefaultgridperpage"><limit>3</limit></action> <action method="addpagerlimit"><mode>grid</mode><limit>3</limit></action> 

if go /category.html see 3 products. works, great!

but want able show products @ once, add catalog.xml following:

<action method="addpagerlimit"><mode>grid</mode><limit>999</limit></action> 

now, if navigate /category.html?limit=999 can see categories products, expected.

the problem:

when come /category.html, no limit params, displays products instead of 3 wish did. happends because magento caches limit preference.

the question:

is there configuration prevents magento caching listing options?

thank in advance.

in toolbar block there method called disableparamsmemorizing. should disable storing of parameters in session.
try add in toolbar block.

<action method="disableparamsmemorizing" /> 

or can override mage_catalog_block_product_list class , make gettoolbarblock method this:

public function gettoolbarblock() {     if ($blockname = $this->gettoolbarblockname()) {         if ($block = $this->getlayout()->getblock($blockname)) {             $block->disableparamsmemorizing();             return $block;         }     }     $block = $this->getlayout()->createblock($this->_defaulttoolbarblock, microtime());     $block->disableparamsmemorizing();     return $block; }