Shrink wrap contracts
Courts in the United States have faced the issue of shrink wrap contracts in two ways. One line of cases follows ProCD v. Zeidenberg which held such contracts enforceable (eg. Brower v Gateway [4]) and the other follows Klocek v. Gateway, Inc which found them unenforceable (eg. Specht v. Netscape Communications Corp. [5]). These decisions are split on the question of consent, with the former holding that only objective manifestation of consent is required while the latter require at least the possibility of subjective consent.
As you can see courts are split as to whether shrink wrap contracts are enforceable. EULA is the same thing basically.
http://en.wikipedia.org/wiki/Clickwrap_license
Except for the 2nd and 7th Circuit all these cases upholding the clickwrap (thats what the EULA is) are low courts with no value. Thus only the 2nd and 7th Circuit is where it is law that ELUA is enfoceable, its a open question everwhere else in the United States.