SQL CLuster installation is showing differrent version on diffferrrent nodes in ActivePasive cluster environment

Hi Experts,
We have SQL Server 2005 installation, we have deployed SP2 and then applied hotfix. The version showing on both the node is different.
On one node it is showing version of SP2 and on another node it is showing SP2+ Hotfix.
SQL Service is running fine on both the node without any issue.
Will there be any issue while we apply any hotfix in future?
What could have wnet wrong during hotfix install? How can we correct it?
This is produciton instance.
Regard,
Hemant

There is interesting discussion which is similar to your issue and some detailed steps also
http://sqlforums.windowsitpro.com/web/forum/messageview.aspx?catid=74&threadid=88972&enterthread=y
Cheers
Sat