Oracle Database 10.2.0.1 Patches

Can anybody give me a list & location (metalink patch no) of all the latest patches for the environment I have. I have a 2 node Oracle (10.2.0.1) RAC installled on CentOS5 (equivalent to RHEL 5.0) 64bit. (x86-64). I tried to search them, but could get the patches only for 10.2.0.3 & 10.2.0.4. If anybody has done it already, I will be oblidged to get the list. The database instances in RAC are getting terminated intermitantly one after another once in a week, sometimes both are getting shut. So I think applying patch will help.