The system is gentoo linux (2.6.18-gentoo-r1)
I recently tried 2.6.18.1 kernel and wine stoped working. Then I downgraded to 2.6.16.18 and wine working fine now. After doing some important work, I will recompile 2.6.18.1 again with same .config and will see what happens. But because difference of .config between my 2.6.16.18 and 2.6.18.1 wasn't very big I think this is Wine problem (probably not Linux problem because everything works perfectly with new kernel). But I must try exactly same .config to be sure (only some deprecated options will be automatically excluded by "make menuconfig").
I could try installing an older version of gcc or an older kernel and see if
that helps.
If downloading 39M isn't big problem for you then please try kernel 2.6.16.18. You can download it here: http://www.kernel.org/pub/linux/kernel/v2.6/linux-2.6.16.18.tar.bz2