paypal link is fishy

Hi,

The paypal link on your donations page links has a cert mismatch. (the 
link is to paypal.x.com, but the cert is for paypal.com.) A check with 
whois does show that X.com is registered to paypal, but the record was 
most recently changed this morning!?
Do you have any info on this seemingly illegitimate link?

Thanks,

-(-- John