FileVault 2 / Bluetooth connection / WLAN - OS X Lion 10.7.4

hi community.

have strange issues concerning bluetooth connection of keyboard , mouse ever since enabled filevault 2 on imac (mid-2011 model).

before enabling filevault 2, whenever started imac, keyboard , mouse connect upon booting. when asked enter password on start-up, use keyboard , mouse.

ever since enabling filevault 2, when password prompt shows up, keyboard , mouse not connected. have press mouse button , button on keyboard, recognized , bluetooth connection established.

furthermore, after system has booted up, during first minute of use, regularly suffer bluetooth connection drop-outs of either mouse or keyboard, never both @ same time. takes few seconds mouse / keyboard reconnect. connection stable , can work long want without further drop-outs.

know minor problem, drives me crazy. especially, since connection issues disappear, whenever disable filevault 2.

there way solve this?
think must have fact prompt after enabling filevault 2 appears @ different point in boot-up process without filevault 2.

else happens, whenever filevault 2 enabled: after boot-up imac connects wlan (time capsule 2 gb, 2011 model) , connection dead stable. have time machine create backups via wlan , works charm.
once computer goes sleep mode, upon re-awaking connects wlan , again connection dead stable - until time machine kicks in hourly update. wlan still shown connected, connection lost, cannot access internet , time machine doesn't work anymore.
until restart, things normal.

problem disappears upon disabling filevault 2.

, third issue occurs after enabling filevault 2: every once in while, after entered password, instead of booting up, status bar appears on screen. status progressing, appears if loading or finishing process. computer boots up, incredibly slow.
have restart it, fix problem.

again, after disabling filevault 2, problem gone.

have run imac hardware test, doesn't show out of ordinary. of time, system fine , stable.

problems occur, when filevault 2 active.

sorry lengthy post, these things bother me.
hope gone, once mountain lion released.

there solutions?

regards

sebastian

 

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