Bug: Isn´t it possible to use require/include to add methods to classes????

Hi, I tried to require/include (tried both) a file containg a simple function, which will be used in many different scripts/functions. This functions extends in this case several classes by an unique method, they all can use. I found out that it´s even uninteresting if the file really exists or not. No "file not found" error is thrown. Requiring from the main script, outside any classes works and if a file isn´t existent an error occurs. I got this error: Parse error: parse error, expecting T_OLD_FUNCTION' or T_FUNCTION' or T_VAR' or '}'' in class.db.php on line 98 cut&paste worked without problems, external file is enclosed in <? ?> tags, otpimizer isn´t activated, no old .dlls, everything´s fine, almost. I´ve encountered this error on Win2000 RC2 (build from yesterday) and on Linux RC1 andré