[Q] ICS wifi and play store issues

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hi,

updated my Sensation to ICS using the stock rom on here but getting a few issues

current build
3.32.401.3 cl309896 release-keys

baseband version
11.69.3504.00u_11.22.3504.07_m

now after few hours handset drops wifi and have to reboot as swithcing wifi on and off does not work, even if i set the wifi to use more power option.

second and more importantly i keep getting error on play store "error processing purchase"

have removed the app and reinstalled and it always updates to same version but still getting this problem, any ideas on a fix please ??

TIA

anyone help on this