[TYPO3] MySQL error with 'cache-pages'

[Oleg Sverdlov]

I am receiving failed mysql query in frontend ( mysql 5.0.51a on 
Windows, typo3 4.0.8 ). Why does it happen and how to get rid of it? 
Thanks in advance for your help.

t3lib_DB::exec_INSERTquery  Incorrect integer value: '' for column 
'temp_content' at row 1

lastBuiltQuery    INSERT INTO cache_pages
(hash, page_id,HTML,
temp_content,
cache_data,expires,tstamp,reg1
) VALUES (
'acf72897c0682c618667c6ed616f9455','1','....some html...'
'',
'....some serialized code....','1207256400','1207214495','77'
)
debug_backtrace    require
// tslib_fe->generatePage_postProcessing
// tslib_fe->realPageCacheContent
// tslib_fe->setPageCacheContent
// t3lib_DB->exec_INSERTquery
// t3lib_DB->debug


-- 
With best regards,
Oleg.
*OLS Software* Websites Building, PHP Development.
Tel./Fax 03-613-2865 , mobile: 054-424-0865
URL http://www.ols.co.il