Im a newbie so any help would be appreciated. I have ESS 4.0.467 on Windows XP sp 3. I also have a maintanence program(can I say this?) System Mechanic. It is not an AV. This program updates once a week with updated "definitions". Not upgrades to the program itself (eg v9.5 to 9.6) but weekly updates to "maintenance definitions". Sort of works like an AV signature database update but only weekly. Problem is that since I upgraded to 4.0.467 I cannot get these weekly definition updates. ESS has tried to block the major updates to this program (e.g. v9.0 to v9.5 they show in the Log) but no record of blocking these weekly definition updates is shown. I did not have this problem with the previous ESS builds. I have tried turning off ESS to no avail. I have re-installed the other program several times. It is a hugely popular program...Any thoughts? Thanks!